ZOOLOGY. 
375 
Family TURBINID^, 
TROCHUS FILOSUS. 
Trochus filosus, Wood. lad. Test. Supp. pi. 5, f. 23, 1828. —Carpenter, Rep. Brit. Assoc, p. 320. 
Trochus ligaius , Gould ia Proceed. Boston Soc. Ill, p. 91, 1847.—Exped. Shells, p. 185, fig. 207. 
Trochus modesius, Midden ? Beit II, pi. 85, p. X, f. 16, 17, 18, 1849. 
Hab. —Straits of de Fuca, Dr. Cooper; Upper California, Dr. Trask. 
Not very common. T. modestus of Middendorff is considerably smaller, but otherwise much 
resembles this species. 
29. TROCHUS SCHANTARICUS. 
Trochus schanlaricus, Midden. Beitrage II, 85, 12.— Idem, Eeise, p. 204, pi. xviii, f. 1-7. 
Hab —Straits of Fuca, Dr. Cooper ; Scliantar islands in Sea of Ochotsk, Middendorff. 
This small species appears to be abundant in the above locality, and numerous specimens 
were collected. They all exhibit more or less perforation beneath, and are uniform in size, 
which is much less than T. filosus. In other particulars the two are nearly allied. 
Family HALIOTIDiE, 
HALIOTIS KAMTSCHATKIANA. 
Haliolis Kamtschaikiana, Jonas, Reeve, Con. Icon. Ill, f. 8.— Carpenter, Rep. p. 320. 
Hab —Nootka Sound, Captain Russell. 
Several specimens of this beautiful species of Haliotis were brought from Nootka Sound by 
Captain C. J. W. Russell, of which four were presented to us by Dr. Trask. 
Young shells of H. rufescens bear considerable resemblance to this species, for which there 
is reason to think they have sometimes been mistaken. Among numerous specimens of Haliotis 
sent to the Smithsonian Institution from different localities on the coast of California, I find 
none of this species from any more southern points than that given above, in latitude 49°. Mr. 
Carpenter also considers it doubtful as a California species. 
Haliotis corrugata, H. splendens, H. rufescens, and H. Cracherodii were sent from San 
Diego by Mr. Cassedy. H. calif orniensis must be rare, as none were obtained by any of our 
collectors or correspondents. 
Family BI S S U R E L LID M. 
FISSURELLA NIGROPUNCTATA. 
Fissurella nigropunclata, Sowerby, Reeve, op. cit. 
Hab. —Santa Catalina, Dr. Trask ; Gallapagos, Cuming ; Panama, C. B. Adams. 
Two specimens of this shell, hitherto only found in the Panama province, were sent by Dr. 
Trask as coming from the island of Santa Catalina, near the coast of Upper California. 
FISSURELLA ASPERA. 
Fissurella aspera, Eschscholtz, Carp. Rep. 320, ( Olyphis.) 
Fissurella cralilia, Gould ? 
Fissurella denseclathrata, Reeve ? 
Hab. —-Upper California, Lieut. W. P. Trowbridge ; Puget Sound, Dr. Gould. 
