ZOOLOGY. 375 



Family TURBINIDJl. 

 TROCHUS PILOSUS. 



Trockiifjilosiis, Wood, Ind. Test. Snpp. pi 5, f. 23, 1828. — Carpenter, Rep. Brit Assoc p. 320. 

 Trochus tigalus, Goild in Proceed. Bost. Soc. Ill, p. 91, 1847. — Exped. Shells, p. 185, fig. 207. 

 Troclms mcdestus. Midden. ? Beit II. pi. 85, p. X, f. 16, 17, 18, 1849. 

 Hah. — Straits of De Fuca, Dr. Cooper ; Upper California, Dr. Trask. 



Not very common. T. modesfus of Middendorff is considerably smaller, but otherwise much 

 resembles this species. 



29. TROCHUS SCHANTARICUS. 



Trochus schonlariciis. Midden. Beitrage II, 85, 12. — Idem, Reise, p. 204, pi. xviii, f. 1-7. 

 Hah — Straits of Fuca, Dr. Cooper ; Schantar islands in Sea of Ochotsk, Middendorlf. 



This small species appears to be abundant in the above locality, and numerous specimens 

 were collected. They all exhibit more or less perfection beneath, and are uniform in size, 

 which is much less than T.Jilosus. In other particulars the two are nearly allied. 



Family HALIOTIDJl. 

 HALIOTIS KAMTSCHATKIANA 



Haliotis Kamtschaihiana, JoxAs, Reete, Con. Icon. Ill, f. 8. — Carpentee, Rep. p. 320. 

 Sab. — 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. ru/escens 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 coerugata, H. splexdens, H. rufescens, and H. Cracherodii were sent from San 

 Diego by Mr. Cassedy. H. californiensis must be rare, as none were obtained by any of our 

 collectors or correspondents. 



Family FISSURE LLID.E. 

 FISSURELLA NIGROPUNCTATA. 



fissurella nigropundala, Sowerb?, Reeve, op. cit. 

 Hah. — Sinta Cataliua, 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 Cataliua, near the coast of Upper California. 



FISSURELLA ASPERA. 



Fissurella aspera, Eschscholtz, Carp. Rep. 320, (GUiphis.) 

 Fissurdla cratilia, Gould ? 

 Fissurella denseclathrala, Reeve? 

 Bab. — Upper California, Lieut. W. P. Trowbridge ; Puget Sound, Dr. Gould. 



