ZOOLOGY. 
379 
Family B U L L I D M . 
BULLA NEBULOSA. 
Bulla nebulosa , Gould, Sowerby, Thes. f. 79,80. 
Bab .—Bay of San Pedro; Dr. Trask. 
BULLA TENELLA. 
Bulla tenella, Adams, Sowerby, Thes. pi. 134, f. 104. 
Bab .—Puget Sound; Dr. Suckley. 
Tlie habitat of Adams’s shell is not known. A specimen from Puget Sound agrees very well 
with Sowerby’s figure and description quoted above. 
Family OSTREIDJE. 
OSTREA EDULIS? 
Ostreaedulis ? Linn. Lam. 
Bab —Shoalwater bay, Wash. Terr.; Dr. Cooper. Straits of Fuca, and Puget Sound; Mr. Gibbs. 
Mr. Carpenter is of opinion that this is a distinct species, and on comparison with European 
specimens it does show differences. 
“Oysters are rare on most parts of the northwest coast, but there are a few localities in 
Avhich they are found in abundance. One of these is Shoalwater bay, a little to the north of 
the mouth of Columbia river, where are to be found the conditions requisite for their existence 
and multiplication. The markets of San Francisco and all the coast southward are supplied 
from this bay. The oysters obtained here appear to differ little, if at. all, from the common 
oyster of Europe, and possess the same peculiar coppery flavor remarked in the European mol¬ 
lusc when eaten for the first time. 
“In Puget Sound small oysters are found near the mouth of the Nisqually river, and some 
others, but nowhere large enough to be of much value. They are said to grow larger at Van¬ 
couver island, and very large ones have lately been discovered near the mouth of Hood’s 
Canal.”—C. 
ANOMIA MACROSCHISMA. 
Anomia macroschisma, Desh. Rev. Zool. 369. Mag. Zool. PI. 34.— Midd. Btit. iii, 6, Idem Reise, p. 242, PI. XIX, fig. 
1—5. 
Placunanomia macroschisma, Carpenter, Rep. p. 312. 
Bab . —Straits of Juan de Fuca; G. Gibbs, esq. Nootka sound; C. J. W. Russell. 
Several very perfect specimens were collected at the Straits of Fuca, and sent to the Smith¬ 
sonian Institution by Mr. Gibbs. 
PECTEN CAURINUS. 
Peden caurinus, Gould, Proceed. Bost. Soc. iii., p. 345. Exped. Shells, 95. U. S. Exploring Exped. Moll, and Shells, 
p.458. Atlas, fig. 569.— Carpenter, Rep. p. 311. 
Hub .—Straits of Fuca; Dr. Suckley, G. Gibbs, esq. Port Townsend, Admiralty inlet, Oregon; Gould. 
This fine pecten is found of a much larger size than that described by Dr. Gould. Of ten 
specimens collected by Mr. Gibbs and sent to the Smithsonian institution, one measures twenty- 
three inches in circumference, with a diameter of nearly eight inches, and some others are 
nearly as large. 
