202 MOLLUSCA. 
Length of axis one-fourth of an inch; diameter one-fifth of an 
inch. 
Inhabits the Bay of San Francisco, California. 
Somewhat the same exterior as L. acuminata, but las not the elon- 
gated, conical form: the globoseness of the last whorl is remarkable; 
it is more polished, smaller, and with a smaller aperture than L. 
scutulata. 
Figure 236, 236 a, two views of the shell, enlarged; 236 d, natural 
size. 
LirrorINA OBESA (SowERBY), Genera of Shells, f. 6. 
ANIMAL with the foot thick and fleshy, pale ochreous beneath, and 
mottled with brown on the sides. Head prolonged, flesh-coloured 
about the mouth; tentacles long and slender, ochreous, with annul of 
dusky-brown; eyes on an enlargement at the external base. Oper- 
culum of a clear, ruddy horn-colour. Motions very active. 
Numerous specimens were found on the shores of the lagoon at 
Clermont Tonnerre; also at Honden Island, King’s Island, Ra- 
taka, &c. [J. P. c.] 
Figure 235, the animal, with the shell, as in motion; 235 a, locomo- 
tive disk of the animal. 
LirrorINA PYRAMIDALIS (Quoy and Gaimarp), Voy. de 1]’Astrol., 
Atlas, pl. 33, f. 12-15. 
The figure of the animal given by Quoy and Gaimard, is very in 
accurate. The sides are yellowish, with a median, longitudinal, 
orange stripe; the head and tentacles are slate-coloured ; mantle pale 
orange beneath ; disk cream-coloured, shaded greenish. 
Figures 234, and 234 a, two views of the animal, with the shell. 
