TESTACEOUS MOLLUSCAs 287 
We may add the three following species of Hinnites to this 
genus, the almost sole distinction of being attached to foreign 
substances scarcely sufficing for generic distinctness. 
H. Sinvosus*. Sow. Th. t. 20, 7.1, 2,3.—Ostrea, S. Gel. 
3319.—List. t. 172, f. 9.—D. p. 262.—W. t. 10, f. 54.—Prcren, 
S. Penn, 4, p. 222, t. 64, f. 2.—Lam. 49.-—Turt. B. t. 9, f. 5, 
p. 210. P. Pusto. Don. t. 34.—Sow. G.—Reeve. t. 114, f. 6. 
Turt. B. t. 17. f. 2. Oblong, thin, with close radiating scabrous 
striz ; ears unequal, with scabrous radiating striz ; lower valve near 
the ventral edge usually irregularly depressed and polished, regular 
when young, distorted by age. The young (P. Isapetta. 
Macg. Ab. p. 225,) are perfectly free. 
H. Gicanteus. Gray im Ann, Ph. 1826.—Sow. Th. t. 20, f. 3, 
4, 5.—Ostrea,G. W.S.t.2,f.7.  Irregularly oval, thick, pale 
brown with reddish radiating streaks, and crowded radiating sulci; 
ears small and narrow; hinge thick; inside white, hinge purple. 
5.4. 
H. Coratuinus. Sow. Th. Hinnites, p. 80. Very irregular, 
fine coral red, upper valve with small radiating ribs here and there 
muricated: inside pale subfuscous, dull purple at the ventral edge, 
muscular scar having the appearance of a horny substance veined 
with the same as the other parts of the inside, its lower edges varie- 
gated with pale dull purple; inside composed of a distinctly 
facetted crystalline substance with occasional black coriaceous 
spots near the edges: lower valve paler, very rough from the 
irregularities of the rocks to which is is attached. E#. Africa. 
(See likenise the H. Pounsont and Nutra. of Conrad J. A. N. S. 
Philad. 7. 


Chenu. (£ll. Conch.) —Bysstver and Vartcotor. Dufo. (Ann. de Se. 
Nat.—Maront. Don. (Nat. Rep. t. 91.)—Tricarinatrus and 
Fasricit of Phil. Ab. und Bes. Conch. The Cresricosratus of 
this last work must be compared with Pyxidatus and the Exca- 
vAtTUus with Fuscus and Sinensis: the Anronitseems identical with 
Laqueatus. The P. Nesutosus of Brown (Illust. Conch. Britain.) 
is evidently Danicus and the Distocatus of Say ( J. dc. Philad.) 
is, says Conrad, a young Purpuratus. 
P. Larrcosratus. Gray, (Appe. to Diefenbach N. Zealand,) 
is the Brrrpus of Philippins Conchylien, and judging from the de- 
scription of Deshayes in the third vol, of the Encyc. Methodique, 
the Medius of Lamarck, 
