32 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



VENERICARDIA CRASSIDENS Broderip and Sowerby, 1829. 



Zool. Journ., vol. 4, p. 365; Proc. U. S. Nat. Mus., vol. 26, p. 949, pi. 43, ftfl 9. 

 Arctic and Bering Seas and eastward to Kodiak Island, Alaska. 



VENERICARDIA NODULOSA Dall, 1919. 



Proc. Biol. Soc. Wash., vol. 32, p. 249. 

 Santa Barbara to the Coronado Islands. 



VENERICARDIA MONILICOSTA Gabb, 1861. 



Proc. Acad. Nat. Sci. Phila., p. 371. 

 Santa Barbara, Pleistocene. Recent? 



VENERICARDIA VENTRICOSA Gould, 1850. 



Proc. Boston Soc. Nat. Hist., vol. 3, p. 276; Rep. U. S. Expl. Exp. Moll., 



p. 417, fig. 532. 

 Belkoffski Bay, Alaska, to Coronado Islands and Cortez Bank, California. 



VENERICARDIA INCISA Dall, 1902. 



Proc. Acad. Nat. Sci. Phila.. pp. 710, 714: Proc. U. S. Nat. Mus., vol. 26, 



No. 1342, pi. 63, fig. 4. 

 Unalaeka to the Seiuidi Islands, Alaska. 



Subgenus Miodontiscus Dall, 1903. 



MIODONTISCUS PROLONGATUS Carpenter, 1864. 



Suppl. Rep. Brit. Assoc, p. 642; Proc. U. S. Nat. Mus.. vol. 18, pi. 16, 



figs. 7, 9. 

 Middleton Island, Alaska, to San Diego, California. 



MIODONTISCUS MERIDIONALIS Dall, 1916. 



Proc. U. S. Nat. Mus., vol. 52, No. 21S3, p. 408. 

 Off Point Loma, California, 70 fathoms. 



Genus CALYPTOGENA Dall, 1891. 



CALYPTOGENA PACIFICA Dall, 1891. 



Proc. U. S. Nat. Mus., vol. 14, p. 190 ; vol. 17, pi. 25, figs. 4, 5. 

 Clarence Strait, Alaska, to Santa Barbara Channel, California. 



CALYPTOGENA ELONGATA Dall, 1916. (Plate 3, fig. 3.) 



Proc. U. S. Nat. Mus., vol. 52, No. 2183, p. 408. 

 Santa Barbara Islands to San Diego. 



Genus MILNERIA Dall, 1881. 



MILNERIA MINIMA Dall, 1871. 



Amer. Journ. Conch., vol. 7, p. 152, pi. 16, figs. 5, 6. 

 Monterey to Rosario Bay, Lower California, on HaliotiS. 



MILNERIA KELSEYI Dall, 1916. 



Proc. U. S. Nat. Mus., vol. 52, No. 2183, p. 408; vol. 8. pi. 25, figs. 4, 7. 

 Monterey to Point Abreojos, Lower California, under stones. 



