THE

MALACOLOGICAL

conchologicAl

agaiitt^.

CONDUCTED BY

G. B. SOWERBV, F. L. S.,

&c. &c.

Part I,

Eondon ;

fRlNTtli BV E. J, STIHLING, ABDLE STREET, WOOD STREET, CHEAFSllVKi

TOR

17 5. Sowerbij, Great Ruaseli Street, Bloomtbvry

1838.

Foil PRIVATE GRATUITOVS DISTRIBUTIOW ONIY,

THE

TVEAIiACOLOGICAL

CONCHOLOGICAL

l^agaifwt.

CONDUCTED BY

G. B. SOWERBY, F. L. S.,

&c. Ike.

Hontton:

PRINTED BY E. J. STIRLING, 16, MILK STREET, OHEAPSIDK.

FOR

G. B. Sowerby, Great Russell Street, Bloomsbury

1839.
FOR PRIVATE GRATUITOUS DISTRIBUTION ONLY.

33

Art. IV. A List of Marine MolLusca taken during a few days stay
at Oban, in Argyleshire, in the Autumn of 1838. By John Gwyn
Jeffreys, Esq., F. L. S., &c.

Class GASTEROPODA, Cuvier.

Order Tectibranchia, Cuv.

Family Ageba.

Genus Bulla, Auctorum.

Species.

B. aperta, Auct.

In deep water ; where a single specimen only occurred to me.

Genus Aplysia, Auct.

A. depilans, Auct.

Tn deep water, at DunstafFnage Bay, near Oban ; rare.

Order Pectinibranchia, Cuv.

Family Turbinid/e.

Genus Paludina, Ferussac.

P. retusa. (var. zonata.)

Keriia Littoralis, Montagu.

On the beach at low water; common. The same variety has been
found in Cork Harbour.
P. Littorea.

Turbo Littoreus, Mont.

With the last ; abundant.
P. Ulvse.

Turbo Ulvcs, Auct.

On the beach between high and low water mark ; abundant*
P. Labiosa and var. (membranacea.)

34

Turbo labiosus, Mont.

On fuci, at low water mark ; not common.
P. parva.

Turbo parvus, Mont.

With the last ; common. . .

P. reticulata, y^fJCr.'^ X^^*z^^

Turbo reticulatus, Mont.

In deep water ; rare.
P. striata.

Tirbo striatus, Mont.

With the last ; rare.

Genus Odontostomia.

Odostomia, Fleming.
O. plicata.

Turbo plicatus, Mont.
In deep water ; rare.

Genus Turritella, Lam.

T. Terebra, Lam.

In deep water ; common.

Genus Eulima, Risso.

^M^^^f'^^-'^ E. Crassula, (N.S.)

One specimen taken by the dredge in deep water.
E. elegantissima.

Helix elegantissima, Mont.
With the last ; rare.
^U,J!uz^^^^ E. decussata, (N. S.)
! One specimen found with the last.

N. B. Mr. Geo. B. Sowerby will have an opportunity of describing
and figuring in his forthcoming work, on the British MoUusca, any new
species noticed in this Catalogue,

35

Genus Cyclostrema.

C. depressum.

Helix depressa, Mont.

On the rocks at low water mark ; abundant.

Genus Phasianella, Lam.

P. Pullus, Lam.

On fuci at low water mark ; not common.

Genus Trochus, Auct.

T. Ziziphinus, Auct ; & var. (Isevis.)

Under stones at low water mark ; and by dredging ; common.
T. elegans, (N.S.) C^'. ^//^^^'^,r^>rr^---^

In deep water; common.
T. Montacuti, (N.S.)

With the last ; rare.
T. cinerarius, Auct. Brit, and var. (intermedia.)

Under stones and among fuci at low water mark : common.

The variety (of which I only found one specimen by dredging in deep
water,) seems to connect this species with the following.
T. umbilicatus, Auct. Brit.

With the preceding ; common.
T. tumidus, Mont.

In deep water ; common .
T. Magus, Auct.

With the last ; rare.

Genus Lacuna, Turton,

L. quadrifasciata, Turt.

On fuci at low water mark ; not common.
L. pallidula, Turt.

With the last ; not common.

36

Genns Natica, Lamarck.

Xerita m t pk rtta, Donovan.
In deep water ; rare.

Family BucciNiD^, Cuv.

Genus Buccinum, Auct.

B. undatum, Auct.

In deep water ; common.

Genus Trichotropis, Broderip & Sowerby.

T. acuminata (N. S.)

Of this new and beautiful species, I took between 30 and 40 speci-
mens by the dredge in a particular spot in Oban Bay. It is perfectly
distinct from T. Borealis,

Genus Purpura, Lam.

P. Lapillus, Lam.
On the rocks below high water mark ; common.

Genus Fusus, Lam.

F. Antiquus, Lam.

In deep water ; not uncommon.
F. laminosus.

Murex Bamffius, Mont.

With the last ; not uncommon.
F. muricatus, Flem,

With the last; rare.
F, Turricula, Flem.

With the last; rare.
F. rufus, Flem.

With the last ; rare.

All the above species are furnished with opercula.

37

Genus Cerithium, Lam.
C. reticulatuni,
Murex reticulatus, Mont.
In deep water ; not common.

Genus Rostellabia, Lam.

R. Pes Pelicani, Lam.
In deep water ; rare.

Genus CypBiEA, Auct.

C. Europsea, Mont.
Under stones at low water mark ; not common.

Family Sigabetid/e, Cuv.

Genus Velutina, Lam.

V. Isevigata, Lam.
In deep water ; not common.

Order Scutirranchia, Cuv.

Family PATELLOIDEiE.

Genus Lottia, Gray.

L, testudinaria.

Patella Clealandii, Sowerby.

On stones near low water mark, and in deep water ; abundant every
where on the coast.
L. virginea.

Patella virginea, Miiller.

On stones in deep water ; common.

Family CAPULiDiE, Cuv.
Genus Capulus, Montfort.
C. Hungaricus, Lam.

In deep water ; not common.

38

Family FissmiELLAD^i:, Cuv,

Genus Fissurella, Lam.

F. Grseca.
In deep water ; not common.

Genus Emarginula, Lam.

E. Fissura, Flem.

In deep water ; common.

Family Cirrhobranchia.
Genus Dentalium, Auct.
D. Entalis, Auct.

In deep water ; not common.

Order Cyclobranchia, Cuv.

Family Patellid.-e, Cuv.

Genus Patella, Auct.

P. vulgata, Auct.

On the rocks between high and low water mark ; abundant.
P. pellucida, Mont, and var. (tevis.)
On fuci at low water; not common.

Family ChitonidjE, Cuv.
Genus Chiton, Auct.

C. fascicularis, Auct.

On stones at low water mark and by dredging ; rare.
C. marginatus, Auct.

On stones at low water mark ; common.
C. cinereus, Auct.

On shells and stones in deep water ; common.
C. albus, Mont.

With the last ; very rare.

39

C. cancellatus, (N. S.)

With the last ; not common.

C. ruber, Auct.
With the last ; not common .

Class ACEPHALA, Cuv.

Order Brachiopoda, Cuv.

Family TEREBRATULIUiE.

Genus Terebratula, Cuv.

T. aurita, Lowe.

Plentifully in about 15 fathom water in Oban Bay. Some of my spe-
cimens are nearly an inch in length.

Family Craniad^.
Genus Crania, Lam.
C. personala, Sowerby,

With the last ; not uncommon.

Order Lamellibranchia.

Family OsTREADiE.

Genus Anomia, Auct.

A. undulata, Mont.

On dead shells of the Pecten opercularis in deep water ; not uncom-
mon.
A. aculeata Mont.

On the roots of the Fucus digitatus ; rare.

Genus Ostrea, Auct.

O. edulis, Auct.

In deep water ; rare.

40

Family Pectinid^.
Genus Pecten, Auct.
P. maximus, Auct.

In deep water ; not common.

P opercularis, Auct. &var. (linearis.)
With the last : abundant,

P. niveus, Flem.

In deep water, rare; although single valves are not uncommonly
thrown up en the beach. One of njy specimens measures two inches
and a half in length.

The species seems to be diffused all over the western coast of Scotland,
and to take the place of P. varius, of which I could not find a single
specimen during my visit to that part of the country.
P. distortus, Mont.

Not uncommon in deep water, attached to old shells of the P. oper-
cularis. The Pecten Pusio of Turton is the young of this species.
P. obsoletus, Mont. & var. (costatus,)

In deep water ; not common.
P. aculeatus, (N. S.)

With the last ; not common. A new and very pretty species.

Genus Lima, Bruguiere.

L. Fragilis. Pecten fragilis of Turton.

In deep water ; very rare.
L. subauriculata, Flem.

With the last ; not uncommon. One single valve taken by me is
nearly half an inch in length.
L. tenera, Turt.

L. fragilis, Flem.

With the last ; not uncommon. The specimens appear to be of a
larger size than those hitherto described ; one of them measuring an
inch and three quarters in length.

41

Family Mytilid^e, Cuv.
Genus Mytilus, Auct.
M. Modiolus, Auct.

In deep water ; common.

M. marmoratus.

Modiolus marmoratus, Forbes.

Myt. discors, Mont.

Imbedded in the outer skin of Ascidise in deep water; common.

M. discrepans, Auct.

With the last, and occasionally free ; common.

Family Arcade, Flem.

Genus Pectunculus, Lam.

P, pilosus. Lam.
In deep water. A single valve only occurred to me.

Genus Nucula, Lam.

N. margaritacea, Lam.
In deep water ; common.

N. erosa, (N. S.)
With the last ; rare.

N. nitida, Sowerby's Conch. 111. f. 20.
With the last; rare.

N. minuta, Flem.

With the last ; not common.

Family Conchacea, Lam.

Genus Cardium, Auct.

C. edule, Auct.

On the beach at low water mark ; not common

F

42

C. echinatum, Auct.

In deep water ; not common.

C- elongatum, Mont.
With the last ; rare.

Genus Tellina, Auct.
T. Donacina, Auct.

In deep water ; rare.
T, Fabula, Auct

With the last ; rare.
T. tenuis, Auct.

Genus Mactra, Auct.

M. subtruncata, Alont.

In deep water ; not common.

Genus Amphidesma, Lam.

A, Boysii, Turt.

In deep water ; not uncommon.

Genus Kellia, Turt.

K. saborbicolaris, Turt.

In cavities of old shells in deep water ; rare.

Genus Thyatira, Leach.

T. Uexoosa.

T. fiexitosa, Mont.

In deep water ; very rare.

Genus Lucina, Lam.

L. Eaduia, Lam.

In deep water ; rare.

43

L. spinifera.

renus spinifera, Mont.

With the last; not uncommon, but only half the size of the Irish
specimens.

Genus Cyprina, Lam.

C. vuls;aris, Sowerby.

In deep water ; not common.

C. minima, Turt.

With the last; not uncommon.

Genus Cytherea, Lam.

C. exoleta, Turt.
In deep water ; rare.

C, sinuata, Turt.
With the last ; rare.

C. undata, Turt.
With the last ; rare.

C. ovata, Flem.

With the last ; not uncommon.

Genus Venus, Auct.

V. Virginea, Auct.

In deep water ; not common.

V. Pullastra, Auct. & var. (perforans.)
On the beach at low water mark ; common.

V. decussata, Auct.

With the last and equally common.

V, verrucosa, Auct.
In deep water ; rare.

44

V. Gallina, Auct. & var. (laminosa.)

On the beach at low water mark ; common.

V. fasciata, Auct.
In deep water ; rare.

Genus Astarte, Sow.

A. Vulgaris.

Venus Dawnoniensis, Mont.
In deep water ; abundant.

A. pallida.

Venus Scotica, Mont.

With the last ; but less common,

(^l23X^^riS^tS A. semisulcata, (N. S,)

With the last ; not common.

A. compressa, Flem.
With the last; very rare.

Family Pylorid^, Rang.
Genus Corbula, Lam.

C. Nucleus, Turt.

In deep water ; common.

C. rostrata, (IN. S.)

With the last. One single valve (the lower one) only occurred to me
but it is so characteristic as to leave no doubt of its being distinct from
every other species.

Genus Mya, Auct.

M. Arenaria, Auct.

In gravel at low water mark ; common. The Sphenia Swainsoni of
Turton is the young of this.

M. truncata, Auct.

With the last; but not equally common.

45

Genus Anatina, Lam.
A. convexa, Turt.

In deep water; where a single valve only occurred to me.

A. praetenuis, Turt.

With the last; not common.

A. intermedia, (N.S.)
With the last ; rare.

A. striata,

Mya striata, Mont.

In deep water ; a single valve.

Genus Psammobia, Lam.
P. florida, Turt.
In deep water; rare.

P. antiquata, Turt.
With the last; rare.

P. ferroensis, Turt.
With the last ; rare.

Genus Solen, Auct.
S. Siliqua, Auct.

In gravel at low water mark ; not common.

S. pellucidus, Mont.

In deep water ; not uncommon.

Genus Pandora, Lam,
P. obtusa, Sow.

In deep water ; rare.

Genus Hiatella, Daudin.

H. artica, Fleming.

In deep water, in the cavities of and attached to old shells ; com-

4(>

Class CiRRHIPODA, Cuv.

Family Balanid^.
Genus Balanus, Auct.
B. albus, (N. S.)

A young specimen was found attached to a Terebratula aurita from
deep water.

B. conicus.

Lepas Scotica, Wood.

On old shells in deep water ; common.
B. Balarioides, Mont.

On rocks and old shells between high and low water mark ; not com-
mon.

Genus Verruca.
V. vulgaris.

Lepas Verruca^ Auct.

On old shells, fuci and other substances in deep water ; common.

Note. By the foregoing Catalogue it will be seen that several of
what are reckoned our most common shells are wanting.

The land and fresh water MoUusca were very few and scarce at Oban.
Indeed the only species worthy of notice were the Helix radiatula and
Pupa palustris ; which I fonnd on the Island of Kerrera.

47

Art. V. Description of a New Species of Helix, belonging to
the Carocollseof Lamarck; by G. B. Sowerby, F.L.S., &c.

Helix Fulgurata. Testa suborbiculari, depressiuscula, carinata,
carina valid^ ; spira planata, anfractibus quatuor, lutescente-
albicantibus, supern^ strigis irregularibus fuscis angulatim
flexuosis ornatis ; anfractu ultimo infra fascia fusca strigisque
irregularibus fuscis angulatim flexuosis picto ; aperlura subtri-
gonali, fusca, angulis obtusis, antico subrotundato, antico
inferiori subundato J peritreraate subreflexo ; umbilico mediocri,
fusco, infra angulato ; lat. 1'5, axis, 0*6. poll.
Obs. Testa tota spiraliter tenuissirae striata, et subundatim oblique
rugulosa est.

Hah. ad Insulam Madegascariensem.
Icon. Tab. H.
A beautiful and remarkable species, with a somewhat orbicular, rather
depressed, strongly-keeled shell, with a flattened spire, consisting of
four yellowish white volutions, the upper part of which is ornamented
with irregular angularly flexuous dark brown streaks ; the lower part of
the last volution has a dark brown band, diverging from which are irre-
gularly angular flexuous dark brown streaks ; the aperture is of a nearly
triangular form and of a dark brown, almost black colour, the anterior
angle, however, is obtuse and somewhat rounded, and the lower anterior
angle is somewhat flexuous ; its peritreme or border is reflected, though
not very strongly, the umbilicus is of n^-iddliug size and dark brown
colour, and its inferior edge is angular : width of the shell one inch and
five tenths, and length of its axis six tenths of an inch.
Observe, that upon a minute examination, the whole surface of the shell
will be found to be covered with very close set, slender spiral striae, and
also with irregular, rather wavy oblique rugulosities.

From Madegascar.

48

Art. VI. Description of Novaculina, a new Genus of fresh
water Bivalves, inhabiting the Ganges and its branches : by
W. H. Benson, Esq., Bengal Civil Service, copied from pp.
63, 64 & 65, " Gleanings of Science," No. 14, Feb. 1830.
Printed at the Baptist Mission Press, at Calcutta.

Order. Conchifera dimyaria ; Division, Crasssipeda ; Family,
Solenacese.

Genus. Novaculina,* Shell subinequivalve, inequilateral, trans-
versely elongated ; ligament external, communicating with the interior
of the shell by an oblique channel. Beaks prominent. Hinge line
nearly straight, two narrow entering teeth under the beak in one valve,
generally three in the other. Siphonal scar very long. Extremities
of the shell gaping. Epidermis eeisily detached when dry, folding over
the edges and extremities of the shell and connecting the hinge margins.
Interior glossy or dull, never pearly.

Animal. Mantle with the basal edges united, forming a tube which
encloses the animal, longitudinally constricted at the suture. Foot pro-
ceeding from the anterior extremity, short, thick, cylindrical, and very
muscular ; enlarged at the extremity into a disk, with a convex surface
the plane of which is at right angles with the axis of the foot and shell
Syphons separate as long as the shell, when fully extended ; the anal
one, or that nearest the hinge, half the thickness of the other ; aperture
constricted, not ciliated.

Inhabits the Jumna, Gumti, and Ganges.

When I first discovered this shell, I was induced, from its lengthened
form and gaping extremities, to suspect its affinity to the Solenaceac, but
the bad state of the deserted shells which 1 found, in which the sharp
delicate teeth were worn down to slight tubercles, which appeared of
little importance, and the semi-internal ligament induced me to refer it
provisionally to Anodonta, accompanied only by a mark of doubt. The
teeth are so delicate that they are only to be found in the shell when
taken with the animal, and the slightest cleaning brings them down.

49

The shell is generally open as wide as the mantle and the epidermis
(which is folded over the edge of the shell, and is soldered to the man-
tle) will permit. I placed betweeh 40 and 50 shells in a tub of water
with a piece of strong slaty clay, but none of them attempted to perforate
it, possibly on account of its hardness, although kept for several days.
The animal at times spirts a strong stream of water from the anal siphon.
It inhabits cylindrical holes in clay, which it probably excavates with its
powerful foot which is always downwards. The holes descend to the
depth of half a foot and more ; I should not consider the shell, the
extremity of which is defended by the lapping over of the epdermis, as
sufficiently strong to aid in any way, except as a fulcrum for the opera-
tions of the foot. They are found by digging below the surface of the
water, in the margins of banks, where they appear to have been per-
forated.

The worn shells are not uncommon in the beds of the Jumna and
Gumti when the waters are retiring. They are rarely found in holes in
canvar-rock. In this case the shell is distorted, if confined in an irregular
hole, to the sinnosities of which it in a measure conforms itself, thereby
shewing that the residence was chosen accidentally, and that the abode
was not formed by the animal itself. In the clay the shells are more
symmetrical.

As in the Solenaceae, the edges of the mantle are soldered together at
the base, forming a tube which confines the animal, and gives more sup-
port to its muscular foot, the exertions of which are principally required
in the direction of the axis of the shell. In its habits Novaculina, also
resembles Solen, clay being merely substituted for sand, in which the
latter genus delights to burrow vertically. The animal differs from Solen
in having its siphons free, instead of occupying a common tube ; and
in having an expanded instead of a conical, termination to the foot.

To Solen Ensis the shell seems, at first, to have little resemblance ;
but it has more characters in common with Solen Legumen, which is
less linear, and has comparatively prominent beaks situated towards the
centre of the hinge margin. In Solen Legumen, also, the ligament.

50

althoUjih external, has, like our fluviatile shell, a channel (not mentioned
by Lamarck) communicating with the interior of the shell : and it
appears deserving of forming a separate genus intermediate between
Solen Ensis and its affinities and the genus under consideration.

Our shel lis easily distinguished from the Solens, which most nearly
approach to it by its prominent beaks, its irregular form, and ihe great
length of its siphonal scar. At times some of the teeth become obso-
lete, as in Solen, and both the cardinal and basal edges are subject to
slight emargination.

Long before meeting with the live animal, I had predicted the extra-
ordinary length of the siphons from the appearance of the siphonal scar
which, as Mr. Gray has well observed in the Zoological Journal, is a
good auxiliary character for the classification of Bivalves.

Except Mr. Gray's new Chinese genus Glauconome, no other fresh-
water shell has a long siphonal scar. The remaining Conchae Fluvia-
tiles, and the whole of fhe Naiadae, having but a slight emargination in
the submarginal impression, and their ciliated siphons scarcely pro-
jecting beyond the extremities of the shells.

This shell is chiefly interesting as being the first of the family of Sole-
naceae or even of the Crassipeda, which has been ascertained to inhabit
fresh water, and must be peculiarly so to the Geologist, who can ill pro-
nounce upon the nature of the medium which was inhabited by a fossil
shell under investigation, until all the genera which inhabit fresh water
are known. I must confess, however, that it has appeared to me, that in
geology too much stress has been laid upon shells, and that the water
which deposited them has often been hastily assumed as fresh, from the
examination of the exuviae found in a particular stratum, to which cur-
rents and other extraneous causes might easily have conveyed them from
some vast antediluvian River.

Mr. G. B. Sowerby, to whom I forwarded dead, and therefore imper-
fect specimens of the Shell in 1828 will have hardly failed to characterize
the genus, as far as the specimens and remarks furnished would admit
of, should he have received them safely ; but as that may not have been

51

the case, and as it is expedient, for the sake of reference, that the shell
now described should not go forth unnamed, I have given it the piovisio-
nal appellation of Novaculina, a name, I believe as yet unoccupied
in Natural History. The only species known may appropriately be
called Gangetica: the following is its description. Shell oblong, with
truncated extremities, white, slightly violaceous internally, epidermis
olivaceous.

Art. Vir. A descriptive Catalogue of the species composing the genus
Chilina of Gray, by G. B, Sowerby, F. L. S.

1 . Chilina Dombeyana. Testa ovato-oblonga, anfractibus quatuor
ad quinque, subventricosis, postice rotundato-subangulatis, linea
impressu prop^ suturas ; apertura magna, longitudine spirara
superante, labio columellari albo, latiusculo, dente valido;
long. 1-5, lat. 0-8, poll.

Syn. Auricula Dombeyana, Lam. Hist. Nat. des Anim. sans
Vert. vi. pt. ii. p. 140. Encycl. method, t. 459, f. 7. Conch.
Illustr. f. 11.

Hab. in fluminis Peruviae ; (Baldivia, Concepgao, Santiago,
&c.

Obs. This species, like others of the subgenus, varies greatly in its
proportions : the aperture is however always rather longer than
the spire : and the spire is usually rather longer in proportion to
the aperture than in the other species.
2. Chilina ampuUacea. Testa ovat^, tenui, anfractibus quatuor ad
quinque, ventricosis, postice rotundato-angulatis, pleruraque
linea inpressa prope suturas, ultimo maximo, ampullaceo ; aper-
tura magna, longitudine spiram multo superante ; labio colu-
mellari albo, angusto, dente parvo : long. 1*4, lat. 1% poll.
Conch. Illustr. f. 3.

Hab. in fluminis Peruvian, (Baldivia.)

Obs. This species appears to be less variable than the others in its
proportions. Some specimens have irregular rather elevated

52

lines, which being decussated by the Hnes of growth, give the
shell the appearance of being divided into square compartments.

3, Chilina tenuis, Gray. M. S, Brit. Mus. Testa ovata, tenui,

apice acuminata, anfractibus quinque, subinflatis, ultimo majori ;
apertura magna, oblonga, longitudine spirani multo superante ;
labio columellari angusto, antice subcanalifero ; long. 0-85,
lat. 0-42 poll. Conch. Illustr. f. 12. Hab: ad Valparaiso et
ad Concepgao.

4. Chilina fluctuosa, Gray. Testa ovata, spira conica, apertura

duplo breviore, anfractibus quinque ad sex subconvexis,
columella alba, dente mediucri ; long. 1* lat. 0*5. poll,

Chilina fluctuosa, Gray Spicilegia. Zool. p. 5. tab VI. f. 19.
Obs. This species varies much in its colouring, as indeed do most of
the species of GroT/'a subgenus, Chilina. Most of the specimens
show a slight trace of a tooth placed on the volution a little
posterior to the columellar fold, which characterizes the sub-
genus or genus.
5 Chilina fluviatilis. Gray. Testa ovata, spira conica, apertura
triplo breviore : anfractibus quatuor, convexis; labio columellari
lato, dente mediocri, apertura magna : long. 0*62, lat. 0*4,
poll. Conch. Ilustr. f. 5. Chilina fluviatilis, Gray, MS.
in Mus. Brit.

Hab. in fluviis ChilieB.

6. Chilina fluminea. Testa ovali, spira brevi, obtusiu?cula ; anfracti-

bus quatuor, postice rotundato-subangulatis ; apertura magna,
labio coluQiellari antic^ planulato, postice plicis duabus validis :
long. 0-55, lat. 0-32, poll. Conch. IHustr. f. 7.

Syn. Chilina fluminea. Gray, Spicil. Zool. p. 5.

Voluta fluminea, Maton in Trans, of Lin. Soc. vol. x.

Hab. in fluminis Brazilise ; (Rio Janeiro and Buenos Ayres.)

7. Chilina major. Testa ovali, spna breviuscula, obtusa, anfracti-

bus quinque ad sex subinflatis, postice rotundato-subangulatis;
apertuia magna, plica columellari mediocri : long. 1-4, lat. 85,

53

poll. Conch. Illustr. f. 10.

Hab. in flumine Baldiviae, prop^ originem.

8. Chilina robustior. Testa ovali, spira breviuscul^, anfractibus

quinque tumidiusculis, ultimo raagno ; apertura magna, labio
externo intus subincrassato : long, {apice eroso) 1*1, lat. 0*7.
poll. Conch. Illustr. f. 1.
Hab. ad ripas submaritimis fluminis Baldiviic.

9. Chilina Parchappii. Testa oblongo-ovata, spira acuminata, an-

fractibus quinque ad sex subconvexis, sutura distinct^, ; apertural
oblonga, albida ; columella incrassata, plica mediana, incon-
spicua: long. 1*0, lat. 0*45, poll. Conch. Illustr. f. 8.

Syn. Lymnaeus Parchappii, D'0r6t^ny, Synopsis Moll. Terr,
et Fluv. p. 25, No. 4.

Hab. Pampas (Republica Argentina.)

Obs. Specimens of this species were sent to me by
D'Orbigny himself, they must therefore be authentic : they do
not however accord very exactly whith his description, par-
ticularly in relation to the expression ^* umhilico suhaperto ;^^
I can scarcely perceive anything deserving the name of umbi-
licus.

10. Chilina Tehuelcha. Testa ovata, spir^ brevi, obtusiuscula, anfracti-

bus quinque, subinflatis, postice rotundato-subangulatis ; aper-
tura magn4, intus alba ; labio columellari lato, plied mediana
valida, antica fere obsoleta : long. I'l, lat. 0"7, poll. Conch-
Illustr. f. 9.

Hab. Patagonia, D'Orb.

Syn. Dombeia Tehuelcha, D'Orb. MS.

11. Chilina Puelcha. Testa ovata, spir& brevi, obtusiuscula, anfrac-

tibus quatuor, rotundatis ; aperturd oblonga, spira duplo lon-
giore: long. 0-7, lat. 0.4, poll. Conch. Illustr. f. 13.

Hab. Patagonia, D'Orb. (Rio Negro, Keni.)

Syn. Dombeia Puelcha, D. Orb. MS.

12. Chilina gibbosa. Testa ovali, crassiuscula ; spira brevissim4,

54

anfractibus quatuor, ultimo maximo, ventricoso, apertura ob-
long4, amp]^, intus alba ; labio externo intiis albo : labio in-
terne, plica mediana valida, postica obsoletiore : long. 0*9, lat.
0.6, poll. Conch. Illustr. f. 4.
Hab. ad ripas fluviorura ; [Maule.)
13. Chilina ovalis. Tesla ovato-oblonga, spi r a subacuminata, anfrac-
tibus quatuor ad quinque, ssbventricosis, postice rotundato-
subangulatis ; apertura mediocre, spira duplo longiore ; labio
columellari antice latiusculo, albo, plica columellari mediocre :
long. 0-6, lat. 0-37, poll. Conch. Illustr. f. 6.
Hab. ad Chonos, (Peninsula de tres Montes.)
Note. — The Chilina appear to form a genus intermediate in character
between Auricula and Lymna^se : they are all more or less distinctly
coloured with four transverse interrupted dark brown bands, and
these bands are sometimes united by intermediate undulating lines
of the same colour.

I have never seen the species described by D'Orbigriy under the
name of Lyninaeus bulloides ; it may possibly be the same with
some one of the above, but I cannot identify it by his description.

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