140 
MOLLUSCOUS ANIMALS. 
LlTTORINA UNDULATA. 
Shell ovate, conical, solid, smooth, white with irregular broad brown zigzag cross lines ; spire conical, 
rather longer than the mouth ; lips acute, purplish ; whorls convex, round, the last slightly impressed near 
the suture. Mouth roundish; outer lip white, brown spotted ; columellar lip and throat purple. Axis 11 ; 
diam. 7 lines. 
My collection. 
Varies with the axis obscurely perforated, probably a deformity. 
LlTTORINA NIGRO-LINEATA. 
Turbo obtusatus. Chem. v. t. 185. f. 1854, 1855? 
Shell ovate, suborbicular, pale whitish, with numerous, close set, impressed, narrow, brown spiral lines; 
the spire very short ; whorls convex ; suture impressed. Mouth ovate ; outer lip black and white spotted ; 
inner lip white, dilated in front ; throat pale brown. Axis 7 ; diam. 5^ lines. ( 
My collection. /- JvdfVfH® 
The spire varies from being very low to nearly the length of the mouth. 
LlTTORINA MELANOSTOMA. 
Shell ovate, turreted, thin, pellucid, distantly spirally striated, white, dotted or concentrically banded 
with brown ; spire conical, tapering, rather larger than the mouth, lip acute, purplish ; whorls nearly flat, the 
last one very obscurely angular ; hinder part of columellar lip black to the axis ; the front part of the last whorl 
not so much coloured as the rest of the shell, and the front of the mouth slightly expanded; outer lip thin. 
Axis 1 1 ; diam. 6 lines. 
Inhab. Indian Ocean. My collection. 
LlTTORINA TUBERCULATA. 
Turbo tuberculatus. Gray, MS. — Wood, Ind. Test. Siqj. t. 7 . f. 3. 
Shell obovate, conical, solid, varied pale and dark brown; spire conical, as long as the mouth; whorls 
rather convex, nodulose, the upper with one and the last with two rows of close set roundish tubercles in 
front. Mouth roundish ; throat black. Axis 6 ; diam. 4 lines. 
My collection. 
LlTTORINA GRANU LARIS. 
Shell obovate, solid, brown, spire conical, shorter than the mouth ; whorls rounded, convex, the upper 
with five or six, and the last with twelve or thirteen spiral irregularly beaded lines. Mouth ovate; throat 
pale brown ; inner lip much worn, with a slight impression over the axis. Axis 7 ; diam. 5 lines. 
My collection — much worn. 
The ridges on the front of the last whorl are much smaller and scarcely beaded. 
LlTTORINA TROCHOIDES. 
Shell conical, elongate, solid, black ; spire conical, acute, rather longer than the mouth ; whorls convex, 
spirally striated, impressed, and nodulose near the suture, with a series of compressed nodules on the upper 
and two on the last whorl, with a series of close-set, roundish granules round the edge in front of the last one. 
Mouth ovate, columellar lip and throat black, with a narrow white spiral band in front; the lip with an obscure 
groove in front. Axis 7 ; diam. 4 lines. 
My collection. 
