ON MOIiLUSCA OP THE WEST COAST l)V XORTH AMERICA. 



610 



A, N. H. Vol. XIV. 

 Sp. Page. 



47. 



44. 

 45. 



46. 



47. 48. 



48. 

 •49. 

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 51. 

 52. 



49. 



Evlima fitscostrigata. 1 sp. , 



Opalia crenatoides. 1 perfect and a few rubl)ed specimen.'?. This, and 

 the Santa Barbara fossil, O. ?var. insculpta, are so close to the Por- 

 tuguese O. crenata, that additional specimens may connect them. 



Truncaria eurytoides. Common; rubbed. Also Guacomayo, in the 

 Smithsonian Museum. 



Sistrum (?ochrostoma, var.) rufonotatum ; connected with type by a few 

 intermediate specimens. Rare ; dead. 



?Nitidella millepimctata. AlsoGuacomayo, Mus. Smiths. Very rare, dead. 



NitideUa densilineata. Very rare ; dead. 



?Anachis tincta. 1 sp. 



Anachis fuscostrigata, 1 sp. 



Pisania data. A few worn specimens ; like Pmsternia, without plait. 



The following table contains the species previously described, with the ad- 

 dition of the other localities in which they are known to occur. The numbers 

 in the first column are those in Prof. C. B. Adams's Panama Catalogue : 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 good 

 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. Eeigen 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.' 



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