VENUS. 117 
V. verRucosA, Linneus. 
V. verrucosa, Brit. Moll. i. p. 401, pl. 24. f. 3. 
We have seen the animal alive at Exmouth, but have 
mislaid our notes. 
V. casina, Linnzus. 
V. casina, Brit. Moll. i. p. 405, pl. 24. f. 1, 5, 6. 
We have not seen this species. 
Section II. Four teeth in one valve and three in the other, with a pit to 
receive the isolated one. 
V. Cutong, Linn. et nobis. 
Cytherea Chione, Lamarck et nonnull. 
-, Brit. Moll. i. p. 396, pl. 27. and (animal) pl. L. f. 8. 
We can at present only refer to our preliminary remarks, 
and state, that this species will not be found to differ from our 
Veneridan descriptions, except m minor points. 
V. exoLeta, Linn. et nobis. 
Artemis exoleta, Poli et nonnull. 
» Brit. Moll. 1. p. 428, pl. 28. f. 3, 4. 
Shell suborbicular, very convexly lentiform, having the 
striz of increase close-set, concentric, flattened, slightly re- 
flexed, and under a powerful lens finely striated in a vertical 
direction, the surface bemg often marked with pencils of red, 
bistre, and dark purple, which radiate from the beaks to the 
ventral range; some specimens are milk-white, and others 
with irregular blotches, which sometimes simulate a sort of 
Arabic characters. There are three teeth in the left valve 
and four in the other. The margins of the shell are smooth. 
Animal. General colour pale yellow-white ; mantle open 
from the anterior depression to the siphons; the margins are 
fringed with close white cilia, which are most distinct anteally, 
but as they approach the posterior end become less pronounced, 
and are resolved mto dentations. The siphons are short, 
scarcely protruding beyond the shell; some authors sav 
y to) ? y) 4 (S) 
ce >) 
siphonal tubes long.” We think this is an error; they are 
