222 
LIMN^AD^. 
subovate, attached to dead leaves^ each containing 
four to twelve ovoid eggs. They are hatched at the 
end of twenty or twenty-one days. 
Angenville {Zoom, t. 8. f. 11.) erroneously repre- 
sents the head of the animal as appearing beyond the 
edge of the shell. 
M. Michaud has described a specimen, which has a 
sinus on the front edge (most probably caused by the 
animal having lived on a stone which had a promi- 
nence), under the name of Ancylus sinuosus, {Compl, 
90. t. 16. f. 1, 2.) 
A, sinuatus^A, Traysianus Dupuy, and A, hirefiexus 
Bourere^nart are distortions of a similar kind. 
%%% J^efitacles compressed^ scarcely raised; eyes far 
hack ; jaws single (?) ; shell ovate^ suhspiral, 
marine, (Otinina.) 
5. Otina Gray, 
Animal rather large for the size of the shell, white, 
very glutinous ; head depressed ; tentacles very 
short, broad, compressed, several raised; eyes 
large, sessile, rather close together on the nape ; 
labial palpi large, nicked in the middle ; foot 
rather large, produced and nicked in front, not 
extending behind ; the shell behind divided in 
two parts by a transverse medial groove ; mantle 
inclosed; the lingual membrane broad, oblong, 
rounded in front ; teeth almost sixty in each cross 
row, and almost a hundred rows all similar, ob- 
long-elongate, four-sided, close together ; apex 
recurved, produced into a conical tooth ; jaws 
