C6\ 



REPORT 18C3. 



481. Chrysodormis dirus,^\&. = incisus, G\di. = Sitchensis, Midd. Dark lirer, with 



spiral grooves. 



482. Chrysodomvs rectirostris, n. s. Small, white, smooth, with straight canal. 



483. Ftisus a7)tbustus, Old. Otia. Close to clavata, Brocchi, from Mediterranean. 



Farallone Is. teste Darbishire ; 16 fm. c. C'p. 



484. Macron Kellettii, A. Ad. P. Z. S. 1853, p. 185. Large, with blunt keels. Dead, 



COfm. Cat. Is. C'p. 



485. Macron lividus, A. Ad. Small, smooth. 



486. Anachis subturrita, n. s. Aspect of small Jiissoina. 20 faint ribs : no spiral 



sculpture. 



487. ? Anachis penicilhta, n. s. Small, with Metuloid sculpture. Beach-10 fm. Cp. 



Class CEPHALOPODA. Family Argo7mtdid(P. 



488. Arf/onanta Argo, Linn. auct. Like the Mediterranean form. Hundreds on Sta 



Cruz Is. Cp. 



Family Octopidee. 



489. Octopus punctatiis, Gabb, Proc. Cal. Ac. 1862, p. 170. S. Clemente Is. Cp. 



Family Loligidce. 



490. Ommastrephes giganteus, D'Orb. Peru. Common at S. Clemente Is. Cp. 



491. Ommastrejjhes ^^yres/i, Gabb, Proc. Cal. Ac. Hundreds on S. Clemente Is. Cp. 



492. Onychoteuthis fusiformis, Gabb, Proc. Cal. Ac. 1802, p. 171. " Cape Horn, 



Mas. Ac." S. Clemente Is. Cp. 



113. It remains to tabulate the shells which have been received from 

 special localities, south of the State of California, either by the writer or by 

 the Smithsonian Institution ; vide Br. Assoc. Eep., par. 77. 



The promontory of Lower California has been so little explored, that the 

 existence of a large inland fiord, in lat. 28°, was not known to the autho- 

 rities. It appears that the whales have long delighted in its quiet waters; 

 and those whalers who were in the secret carefully preserved the exclusive 

 knowledge of so profitable a hunting-ground. AH that we know at present 

 of the molluscs of that region is from collections made at Cerros Island, by 

 Dr. Ayres and Dr. Veitsch. They are mostly shore shells, and are sadly 

 intermixed with an abundance of cowries, cones, strombs, and other clearly 

 Pacific species, which throw great doubt upon those which may be truly 

 from the coast. As it is manifestly a " hotbed of spurious species," nothing 

 can safely be built upon the data, which present a singular intermixture of 

 northern and southern forms. Excluding the Central Pacific importations, 

 the lists stand as follows, the temperate species being distinguished (as in the 

 first Eeport) by a *, the tropical by a t : — 



150 



