230 0. A. White—Jurassic Strata of North America. 
Neritopsidz, and the Lyosoma to the Velutinide. _ 
(8.) Myacites (Pleuromya) subcompressa. The British Colum- 
whi r. Whiteaves refers to this species are certainly very 
closely like the type specimens of A. Packardi, so far as exter 
nal form and surface characters are concerned. s also in 
these respects much like an unpublished form which I have 
seen among a collection of Cretaceous fossils from New sat 
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(6.) Modiola (Volsella) subimbricata. Only three specimens 
were obtained at Queen Charlotte Islands, and these are dis- 
(8.) Camptonectes eatenuatus. Mr. Whiteaves refers his spect” 
men, a single valve, with doubt to this species. In view ° the 
