1894. PROCEEDiNGS OE THE NATIONAL MUSEUM. 155 



region as in some way fortuitous Avere it not for tlie other forms hereiu 

 mentioned, such as Cassis vi-bex^ Mxrcv j^almd-roscc Mexicana, Purpura 

 hijjpocastaneum, etc., some of Avhicli h;ive been verified as to locality by 

 other collectors, etc. 



Subfamily Tapksin^. 



TAPES GRATA, Say. 



-Numerous specimens. 



Los Animas Bay (Xo. 63587, U. S. N. M.); Loreto (No. 63580, U. S. 

 N. M.), This well known and pretty species is quite widely distributed 

 on the West coast; the National collection contains examples from a 

 great number of localities collected by Ilem}»hill, liridges, and others. 

 Several fresh valves were obtained at Sta. Margarita Island by the 

 A Ibatross. 



Family D o n a (J i d jk. 



1 )ONAX C AKIN ATA, TI a ii ley. 



Three specimens. Altata, A. J. Gove (No. 6;5671, U. S. N. M.). A 

 rare and beautiful form. 



74. DON AX TKANSVERSUS, Sowerby. 



One specimen. Altata, Gove (No. 63672, U. S. N. M.). This is 

 another rare species. 



DONAX PUNCTAT08TRIATUS, Han ley. 



Three examples. Altata (No. 63673, U. S. N. M.). 



DONAX FLHXIJOSUS, Gould. 

 One specimen. San Juanico. 



HETEKOD<JNAX BIMACULATUS, Oibigny. 

 = Tellina vicina, C B. Adam.s. 



Numerous large, fine specimens. 



Angeles Bay (No. 73535, U. S. N. M.), and all around the Gulf of 

 California, nearly everywhere up to northern California; southerly to 

 Panama; also in the Autillean waters. Tlie Gulf shells exhibit in many 

 instances very beautiful coloration. 



Family P s a m 3i <» b i i d ^]. 



PSAMMOBIA REGHLAKIS, C a r p e n t e r . 



Valves, beach. Tres Marias (No. 73516, U. S. N. M). 



This form, described by the late Philip Carpenter in the Ann. and 

 Mag. of Natural History (third series) Vol. xiii, 1864, is quite rare in 

 collections and only occasionally met with in fragments or odd valves 



