392 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxm. 



Protocardia (Lophocardium) annettse Dall, 1889. 



Range: Gulf of California. 6 to 24 fathoms. 



Thi.s is distinguished from the preceding species l)v its greater alti- 

 tude and lower radial keel. 



XOTES. 



C((/'dhf/n aculeatiuii Linnanis was found, a single worn valve, by Dr. 



John S. Newberr}' at Acapulco. It was doubtless a ballast specimen. 

 Cardiimi trlangidat'wn ""Sowerby" Carpenter, 1857, I have not been 



able to discover in the literature. It is perhaps a manuscript name 



taken from a museum tablet. 

 Cardhim gemmatum Gould, in Carpenter, Rep. British Association. 



1857, p. 229, appears to be merely a '"list name" and does not appear 



in Gould's works. 

 Cui'dl'iiin orhita Sowerb}', 1833, appears to be an Indo-Pacitic and not 



an American species. 



