ZOOLOGY. 385 



SANGUINOLARIA CALIFORNIANA. 



Sanguinolaria californiana, CONK. Jour. Acad. Phila. VII, p. 230, pi. 17, f. 6, CARP. Rep. p. 301. 

 nab. Mouth of Columbia river ; Dr. Cooper. Perhaps the same as Tdlina inconspicua ; Broderic. 



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

 creeks. C. 



Family 



SOLEN SICARIUS. 



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



Rep. p. 301. 

 Hob. 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 PATULA. 



Solen patulus, Portlock & Dixon, Voyage Round the World, London, 1789, plates, fig. 2, p. 354. 

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

 Solecurtus nuttalli, 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 nuttalli, CARPENTER, Rep. p 301. 

 Hah. Sea-coast 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 ont 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 MYACID.E, 

 MYA CANCELLATA. 



Myacancellaia, CONR. Journ. Acad. Phila VII, p. 235, pi. 18, f. 2. JAY Cat. No. 265. 

 Platyodon cancellatum, CONR. Journ. Acad. Phila. 1819. CARP. Rep. p. 300. 

 Hob. San Luis Obispo ; Dr. Antisell. 



Dead valves only were found. 



SPH^ENIA CALIFORNICA. 



Spfuenia californica, CONR. Journ. Acad. Phila. VII, p 234, pi. 17, f. 11. CARP. Rep. p. 300. 

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

 Hab. San Francisco; Dr. Trask. 



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