ZOOLOGY. 375 



Family TURBINID^, 

 TEOCHUS FILOSUS. 



Trochus filosus, WOOD. Ind. Test. Supp. pi. 5, f. 23, 1828. CARPENTER, Rep. Brit. Assoc. p. 320. 

 Trochus ligatus, GOULD in Proceed. Boston Soc. Ill, p. 91, 1847. Expcd. Shells, p. 185, fig. 207. 

 Trochus modcstus, MIDDEN ? Beit II, pi. 85, p. X, f. 16, 17, 18, 1849. 

 Hob. 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 schantaricus, MIDDEN. Beitrage II, 85, 12. IDEM, Reise, p. 204, pi. xviii, f. 1-7. 

 Nab Straits of Fuca, Dr. Cooper ; Schantar 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 HALIOTID^, 

 HALIOTIS KAMTSCHATKIANA. 



Ealiotis Kamtschatkiana, JONAS, REEVE, Con. Icon. Ill, f. 8. CARPENTER, 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. 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. californiensis must be rare, as none were obtained by any of our 

 collectors or correspondents. 



Family FI SSU RE LLID M, 

 FISSURELLA NIGROPUNCTATA. 



Fissurella nigropunctata, SOWERBT, REEVE, op. cit. 

 Hob. Santa Catalina, Dr. Trask; Gallapagos, Cuining ; 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, (Glyphis.) 

 Fissurella cratilia, GOULD ? 

 Fissurelli denseclathrata, REEVE ? 

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



