ON MOLLUSOA OF THB WEST COAST OP NORTH AMERICA. 289 



No. Page. 

 18 352 



91 634 

 55 578 

 12 615 

 69 628 

 65 631 



71 632 

 3 656 



PI. 

 70 



Fig. 



' Abounds on the coast of 



50-2. Terebratula Californica, Kiist. 

 California." 

 116 249-51. Neritina Listeri, Pfr. Cuba and St. John's Riv., Nicaragua. 

 123 79, 80. Bulla nebulosa, Gould. Sand, 12 iuch. Guaymas. 

 128 35. Cytherea intermedia. Sow. jun. " California, Cuming." 



132 98. cAione, Linn. "Mr. Cuming's specimens are fromMazatlan." 



132104-6. circinata, Born. :=Venus rubra, Gmel. ? + C. alternata, 



Brod. Mazatlan, Capt. Donnel, R.N. 



132 109. brevispinosa. Sow. jun. 1 sp. California. 



140 2. Artemis ponderosa,Gva.y, Anal. 1838, p. 309. =:Cytherea gigantea, 

 (Sow. MS.) Phil. Abbild. pi. 7. f. 1. Sandy mud, low water. 

 Gulf of California. 

 65 697 146 41. Tapes diversa, Sow. jun. Monterey, Hartweg. 

 16 708 153 17,18. FewMs simJZZiwia, Sow. jun. California. 



18 709 144 26,27. amathusia, Pliil. Abbild.pl. ll.f.4. =F. encausta, 1 cnjus. 



California. 



24 769 165 30. Venerupis paupercula, Desh. P.Z.S. 1853, p. 5. [N. Zealand, 



Mus.Cum.etBrit.testeDesA.] "Mazatlan, Cuming," testeSow, 



25 811 171 33. Obeliscus clavulus, A. Ad. On the sands. Acapulco, CoZ. Mq^a?. 

 143 881 184 246. Cerithium assimilatum,C.'B. Ad. " Shells of Jamaica. A darkly 



coloured Jamaican shell, like C. trilineatum," Phil. Medit. 

 [= C. assmiZaiMm,C.B. Ad., Pan. Shells, no. 194. C. terebellum, 

 C. B. Ad. Contr. Conch, is the Jamaican species.] 



62. The following species * are extracted from Mr. lleeve's ' Conchologia 

 Iconica'; a work, the principal advantage of which is, that it figures the 

 specimens in the Cumingian collection. The species are often very minutely 

 subdivided : for this indeed the author may not always be answerable. It 

 is to be regretted that there is sometimes a want of precision in the statement 

 of localities f. 



* See also pp. 187, 208, where many of the species now quoted would have been arranged, 

 had I been able to refer to the Conch. Ic. whenever occasion required. 



f When Mr. Cuming is given as the authority for depths and stations in places which he 

 never visited, the more correct phrase (now generally adopted) would perhaps have been 

 "Museum Cuming." The following instance will show the need of caution. Under Mactra 

 carinulata, Desh. pi. 10. sp. 38, we read " Gulf of California : from the same locality as Ikf. 

 donaciformis." On turning to the latter, we find its locality given as New Zealand. 



1856. u 



II 



