ON MOT-LUSCA OF THE WEST COAST OF NORTH AMERICA. 



6i» 



A. N H. Vol. XIV. 

 Bp. P«;;e. 



44. 

 45. 



47. 



46. 



47. 



4S. 

 40. 

 50. 

 51. 

 62. 



tf 



48. 



49. 



Eiilima fuKoxtrigata. 1 sp. 



Opuliti crfiiiihiiili-K. 1 niTt.'ct and a few nibbed specimens. Tlii'', nnd 



th',' Santa IJai'bara fiissil, O.'fMiT. i/iKcuJpfn, a.rk' sn c'lns>' to tlie I'or- 



tiijrtif.sf (). rreiKtUi, tliat iiilditioaal 8ut'(iiu»'n.'< nia\ .'onn<-ct tlifiii. 

 Tniiiciiria fxrytnitle.i. Com-aon; rubbed. Also Guocouiayo, in the 



Siiiitli.'^onitiii Museum. 

 Sitfrum ( 'fiK-hrwitoma, var.) rufintotnfiim ; connected with type by a few 



iiiti'i-int'diiitH spcciincas. llare ; dead. 

 ?.yi'ii/ri'!a iiii/feitinw'ata. Al.soGuacouiayo, Mus. Smiths. Vtry rare, dead. 

 NifnJrlla (friisilinedtii. Very rare ; dead. 

 ?A/iac/iis tiiictd. 1 sp. 

 AiKichU fii<c')!<tritialii. I sp. 

 I'i.sd/tia elald. A lew worn specimens ; like Pertsternia, without plait. 



The fnllowinj^ table contains the species previou.sly described, with the ad- 

 dition of the other localities in which thcj* are known to occur. The nurabera 

 in the fir.st column are tho.se in Prof. C. B. Adams's Panama Cataloj^ue : a 

 P in the same column signifies that the species has been found at Panama 

 by other collectors. The second column contains the shells of La Paz, col- 

 lected by Major Rich and others, and are marked by an italic P. In the 

 third column, A shows that the shell has been found at Acapulco, on j^ood 

 authority ; and C, that it is known at other stations on the Central American 

 coast. The fourth column exhibits the corresponding numbers of the species 

 in the B. M. Tloigon Catalogue; and G shows that the shell has been found 

 in the Gulf district by other collectors. In the fifth column, Cal. stands 

 for Upper, and L for Lower California ; Marg. for Margarita Bay, Gal. for 

 the Galapagos, E for Ecuador and the tropical shores of S. America, and WI 

 for the West Indies. The sixth column continues the numbering of the 

 species from the list in the ' Annals.' 



105 



