■ti
110 M O L L U S C O U S A N IM A L S .
R a n e l l a l - e v i g a t a , t. 3 6 . / . 18. Lam. H ist. vii. 154.
In b ab .
Tliis shell does n ot in the slightest degree differ from the shell described un d e r the above name, which
is found fossil in Piedmont. See Knorr, Fos. t. 4 6 . / . 819.
R a n e l l a a r g u s .
The T r ito n rane lliformis of Captain King and Mr. Broderip is a true Ranella, and scarcely differs from
this species, fiom which it is distinguished only in b eing rather smooth and slender.
This species is ap t to vary greatly in the ventricoseness of the last whorl. I have some much more
slender than the specimen of T. raneliiformis sent by Captain King to the British Museum. I t also varies
in the size and distinctness o f the tu b e rc le s ; in some, the three or four central ribs on the back of the last
whorl are lan^ely nodulose, while in others the ribs o f all the whorls are slightly nodnlose ; and, lastly, in a
few sp ecime°s, the ribs o f the up p e r whorls are slightly nodulose, while those o f the la st are quite smooth.
T R IT O N IUM .
The tentacles conical, with the eyes placed a t the end o f a sub-cylirdric a i peduncle, about one-third
the ir length, adhering to their base. , , ,
T h e operculum horny, thick, annula r, rounded behind, ra th e r acute in front, with the nucleus ne a r the
middle of the outer side, the inner surface c allous, with a large scar.
T r i t o n i u m C h e m n i t z i i .
Murex argus. Var. Chem. x. f . 1322.
Shell ovate, fosifoem, veotricoee. thin, cancellated, pale yellow, with narrow brown spiral lin e s ; whorls
rounded, sliuhtly concentrically p la ited, and with narrow, sinrple, and broad grooved subnodulose spiral ribs.
Month ovat'e, o ute r lip with ridges in p a l,s , inner Up thin, ndged, wrth many elevated transverse nd g e s m
f r o n t ; canal rather elongated. , .r
This shell, like T r ito n clandestinum, has only one varix ; it is somewhat like T . cingulatnm and 7 . Tran-
quebariciwi, b u t differs in the lips and the convexity of the whorls.
T r i t o n i u m c a n c e l l a t u m .
Shell ovate, conical, elongated, pale yellow or white, rather thick, cancellated, subuodose ; spire rather
longer than the mouth ; whorls rounded, slightly longitudinally plaited and spirally striated, behind sub-
nngular. Mouth small, outer lip largely aud equally to o th e d ; inner lip smooth, with four or five close
ribs in front. Axis I incli.
Inhab.
' T r i t o n i u m F o x i i .
Shell ovate, conical, while, rather thin, spotted with pale brown ; spire nearly as long as the m o u th ;
whorls rounded, with alternate minute, even, and larger nodulose spiral ribs ; heh.nd sobangular n o d ulose ;
throa t white, outer lip subnodose in f ro n t; inner lip smooth, concave, with two or three shghl pla.ts tn front.
Axis 13 inches.
Iniiab. Pacific Ocean.
T r i t o n i u m v i t r e u m .
Shell ovate, lorreted, while, transparent, finely spirally striated, and concent,ically wrinkled ; sptre
acute, ra th e , longer than the mouth ; whorls rounded, varices laminar, radiately sm a ted , wtlh the edge cre-
naied and reflesed. Moutl. ovate, throat smooth, inner lip smoolh, produced, laminar and elevated, canal
slightly recurved. Axis I 5 inch.
Inhab.
! ' ' * I
!' ÌÀ
m o l l u s c o u s a n i m a l s . n i
T r i t o n i u m t e n e r u m .
Shell ovate, turreted, thin, pale, fulvous, pellucid, cancellated, with equal fine longitudinal and spiral
rid g e s ; spire attenuated, longer than the mo u th ; whorls rounded, varices rounded, cancellated, w ith two
brown spots. Mouth ovate, oblong, o ute r lip crenulated, throat smooth, inner lip thickened, smooth, elevated,
canal short, perforated in front. Axis 3J inches.
Inhab.
Allied to T . maculosum, b u t thinner and cancellated.
T r i t o n i u m c a u d a t u m .
Bucc. caudatum. Gmel.—Martini, f . 1053.
Cassidaria cingulata. Lam.
Inhab. In d ian Ocean.
T r i t o n i u m p i l e a r e . Lam.
Var. The shell ventricose, the spire about two-thirds the length of the mouth ; whorls ventricose"; and
lips smooth, black, white plaited ; otherwise exactly like the common state o f the species. Length 2 inches.
PO L L IA . n. g.
This genus contains several shells, which have been scattered into various genera, b u t which all ap p e a r
to have a common character. Their mouth has much the appearance o f T r ito n , b u t they have many varices,
and therefore cannot be ranged with tha t genus. The inner lip is generally crossed by a few plaits in front.
P O L L IA S C A B R A . i . 3 6 . / . 16.
Triton scaber. Brod. and King, Zool. Jour. v. 348.
Shell ovate, oblong, solid, white, covered with brown, bran-like periostracum, with hairy lines over the
spiral rid g e s ; spire conical, as long as the mouth, whorls rather convex, rapidly enlarged, concentrically
waved, regularly and closely spirally ridged, with the ridges widening and becoming subnodose over the
cross folds. Mouth ovate, oblong, white, outer lip w ith nine or ten small distant single conical protuberances
on its inner side, the columellar lip with short ridges behind, and conical tubercles in fro n t; canal
short, wide. Axis 23. Diam. 13. Mouth 13 lines.
Inhab. Coast o f Chili. Mr. Fryer.
POLLIA T R O C H L E A . Favanne, t. 9 7 ./. D.
Shell ovate, fusiform, ventricose, white, smooth, with deep, distant spiral groove s; (he spire rather
shorter than the mouth, c o n ic a l; whorls rounded, produced behind over a very deep broad spiral sutural
groove ; outer lip very obscurely grooved ; inner lip thickened, smooth, w ith three or four very oblique plaits
in front. Axis 1 | inch.
Inhab.
P O L L IA S P I R A L I S .
Shell ovate, solid, thick, white, brown-streaked, spire as long as the mouth ; whorls with a deep groove
a t the s u tu r e ; uppe r with three or four, and last with nine to twelve rather large flat-topped compressed
spira l ridges, sub-angular and strongly transversely plaited behind ; mouth white, outer lip crenulated, throat
grooved ; inner lip smooth. Axis, slightly perforated, i f inch.
Inhab.
This is a very common shell, b u t I do not find it described.
ii
‘ f f .
l . . .