ZOOLOGY. 385 



SANGUINOLARIA CALIFORNIANA. 



Sanguinolaria californiana, CONE. Jour. Acad. Phila. VET, p. 230, pi. 17, f. 6, CAKP. Rep. p. 301. 

 Hob. Mouth of Columbia river; Dr. Cooper. 



Rather common at the mouth of the Columbia and other rivers, and high up salt water 

 creeks. C. 



Family SOLENID^l. 

 SOLBN SICARIUS. 



Sden sicarius, GOULD, Proceed. Bost. Soc. N. H. Ill, p. 214. IDEM, U. S. Expl. Exp. p. 387, atlas, fig. 501. CARPENT. 



Hep. p. 301. 

 ffab.- Puget Sound; Dr. Cooper. 



A single dead shell found on the shore at the town of Steilacoom. It is probably abundant 

 on the mud flats near the mouth of the Nisqually river. C. 



MACHAERA NUTTALLI. 



Solen mazimus, WOOD, (nee Chemn.) Gen. Con. pi. 31, f. 3. IDEM, Ind. Test. pi. 3, f. 16. 

 Solecurtus nuttallu, CONR. Journ. Acad. Phila. VII. p. 234, pi. 17, f. 9. 

 Machaera costata, MIDD. (nee Say) Beit. Ill, p. 78, pi. XXI, figs. 4-10. IDEM, Reise. 

 Machaera maxima, GOULD, U. S. Expl. Exped. ; Jay's Cat. No. 239. 

 Machaera nuUaUi, CARPENTER, Rep. p. 301. 

 Hob. Seacoast of Washington Territory; Dr. Cooper. 



This shell inhabits the sand immediately upon the sea-beach, burrowing about the edge 

 of the usual low tide, where it can be dug up with little trouble, as it is only a few inches 

 from the surface. It is considered, and justly, the best of the many fine eatable mollusca of 

 the coast, excepting always the oyster. Severe storms wash up many of these shells, but 

 they soon crack under the sun's rays, and the beautiful epidermis falls off. 



This is the only truly marine mollusc I have been able to find on the sandy sea-beach near 

 the Columbia river. It extends northward as far as the beach is sandy, but is not found, I 

 believe, anywhere within the Straits of De Fuca. C. 



Family MYACIDJE. 

 MYA CANCELLATA. 



Mya cancellala, CONE. Journ. Acad. Phila. VII. p. 235, pi. 18, f. 2. JAY Cat. No. 265. 

 Platyodon cancdlatum, CONR. Journ. Acad. Phila. 1849. CARP. Rep. p. 300. 

 Hab. San Luis Obispo; Dr. Antisell. 



Dead valves only were found. 



SPHOENIA CALIFORNICA. 



Sphoenia caUf&rnica, CONR. Journ. Acad. Phil. VII, p. 234, pi. 17, f. 11. CARP. Rep. p. 300. 

 Oryptomya californica, CONR. Journ. Acad. Phila. 1849, p. 208. 

 Hab. San Francisco; Dr. Trask. 



49 Q 



