154 SHELLS OF LOWER CALIFORNIA— STEARNS. vokXvit. 



Fisher's sbell is c.orrespondiugly but 20 and 15 mm, Fisher's shell is 

 painted with light yellowish-brown markings, while the Xantus-Car- 

 penter shell has but a few slight indications of color. Anotlier example 

 agreeing closely with the Mulege shell is in the National collection, 

 also a jnnior. A very rare species. 



CYTHEREA (CALLISTA) VULNERATA. 15 rode rip. 



Two good specimens. 



Station 2828, 10 fathoms, off Lower California; Albatross. 

 This is a beautiful species, but not uncommon at many places around 

 the shores of the Gulf and peninsula. 



CYTHEREA (CALLISTA) NEWCOMBIANA, Gabh. 



One specimen. 



Boca de los Piedras (No. 41628, IT. S. N. M.). Ranges to Catalina 

 Island and northward on the coast of California. 



CYTHEREA (TIVELA) RADIATA, 8 o w e r b y . 



One example. San Juanico. Common in the Gulf. 



CYTHEREA (TIVELA) CRASSaTELLOIDES, Conrad. 



One junior only 22 mm. long.. Ballenas Bay, Albatross. Abundant 

 farther north. 



DOSINIA PONDEROSA, Gray. 



Three specimens. 



Gulf of California (No. 03511, U. S. N. M.); San Juanico. The above 

 is fully as common in the Gulf region and at various places on the 

 ocean side of the peninsula as D. Btmkeri, Philippi is in the neighbor- 

 hood of Panama. Carpenter's species J). Annce seems to be of rather 

 rare occurrence. I), ponderosa is also reported from Scammon's Lagoon. 



UOSINIA PR08TRATA, Linn a; us. 



One valve (the left); beach. Gulf of California (No. 74235, U. S. 

 N. M.). 



Among the miscellaneous material in the Fisher collection was a 

 single valve, the left, of a species of Dosinia, unlike either of the species 

 heretofore credited to this province or region. I sent it to the late Mr. 

 Tryon for comparison with the various forms of Dosinia in the collec- 

 tion of the Philadelphia Academy ; he returned it with the comment 

 that it "exactly corresijonds with 1). prostrata from Coromandel (Chem- 

 nitz)." 



The shell certainly differs from Anna', Dunlieri and pondrrosa. I 

 should regard the occurrence of the above at any point in the Gulf 



