382 
ZOOLOGY. 
Family CARDIADAE . 
CARDIUM NUTTALLI. 
Cardium Nuttalli, Conr. Jour. Acad. Pliila. VII, p. 229; pi. 17, f. 3.— Middend. Beitrage, III, p. 39; pi. xvi, f. 
1-5.— Carp. Rep. p. 307. 
Hab. —Shoal water bay and Puget Sound ; Dr. Coo er San Francisco; Dr. Bigelow, Dr. Trask. 
“This large shell is the most abundant of the clams in Shoalwater bay, and is very much used 
as food. It inhabits a mixture of sand and mud, a few inches from the surface, in all parts of 
the bay about h. p way between the shores and the large channels. The Indians are very 
expert in finding them, getting numbers where a stranger can see no sign of their existence, 
by feeling for them with a knife or flat stick. In July many come to the surface and die 
perhaps from the heat of the sun.”—C. 
CARDIUM QUADRA GENARIUM. 
Cardium quadragenarium, Conr. Jour. Acad. Phila. VII, p. 230; pi. 17, f. 5. — Carp. Rep. p. 307. 
Hab. —San Luis Obispo; Dr. Antisell, U, S. A. 
A valve of this rare species was obtained by Dr. Antisell at the above locality. 
Family LUCINIDAE. 
LUCINA CALIFORNICA. 
Lucina californica, Conrad, Jour. Acad. Phila. VIII, p. 255, pi. 20, fig. 1.— Carpent. Rep., p. 307. 
Hab. —San Diego ; Mr. Cassidy. 
Family CYCLADIDAE. 
CYCLAS, n. s.? 
Dr. Gould enumerates two species of this genus from Oregon, C. ■patella and C. egregia. Not having met with any descrip¬ 
tion, we are unable to determine whether either of them is identical with ours or not, or whether it may not be the same as one 
of our eastern species. 
Hab.— Whidby’s island, Strait’s of Fuca ; Dr. Cooper. Pools near Steilacoom ; Dr. Cooper. 
Family YENERID AE • 
YENUS ST AMINE A. 
• 
Venus staminsa, Conr. Jour. Acad. Phila. VII, p. 250, pi. 19, fig. 14, 1837. 
Venerupis pelitii, Desk. Rev. Zool. p. 359, 1839.— Idem, Mag. de Zool. pi. 39, 1841.— Midd. Beit. Ill, 51, pi. XVII, 
fig. 15—13. 
Venus rigida, Goui.d, Proceed. Bost. Soe. N. H. Ill, p. 227, 1850.— Idem, U. S. Exploring Exped. Moll, and Shells, 
p. 420; Atlas, fig. 538. 
Tapes diversa, Sown. Thes. pi. 146, fig. 41, No. 65.— Carp. Rep. p. 306. 
Tapes straminae, Carpenter, Rep. p. 196. 
Saxidomus pelitii, Idem, Rep. p. 299. 
Hah _Shoalwater bay and Puget Sound; Dr. Cooperand Dr. Suckley San Francisco; Dr. Trask. San Diego; Lieut. 
Trowbridge. 
We have brought together the above synonymy after repeated examination and comparison 
of specimens from distant localities between the Straits of Fuca and San Diego. The northern 
shells are commonly but not invariably “ashy white,” as described by Dr. Gould, some 
