NEOZOIC INVERTEBRATES 113 



The name of the collector of this material being Kashevarof , I have 

 corrected the Germanized orthography of Grewingk accordingly. 



Ostrea sp. 

 Ostrea sp. (plicate) GREWINGK, Beitr. NW. Am., p. 289, 1850. 



Localities. Unga Island and the peninsula of Alaska near the Pav- 

 lof volcano. 



Some plicated oysters were obtained as above which Grewingk re- 

 garded as specifically different from the following species, of which I 



have some doubt. 



Ostrea tayloriana Gabb. 



Ostrea longirostris LAMARCK, var., GREWINGK, Beitr. NW. Am., p. 288, 



1850. 

 Ostrea tayloriana GABB, Pal. Cal., n, p. 34, pi. xn, figs. 60, 6oa, 1866. 



Localities. Unga Island and near Pavlof volcano on the peninsula 

 of Alaska (Grewingk). Popof Island, 3372 and 3563. 



The most abundant fossil on Popof Island in this horizon is an 

 oyster which much resembles the common species of eastern America, 

 Ostrea virginica Gmelin. 



This appears to be the form which Gabb named O. tayloriana, 

 though the crushed and disintegrated specimens from Popof Island are 

 in such a condition as to make the determination not absolutely certain, 

 though highly probable. 



Pecten (Chlamys) fucanus Dall. 



Pecten (Chlamys) fucanus DALL, Trans. Wagner Inst., m, 704, pi. 26, fig. 7, 

 1898. 



Localities. Miocene of Clallam Bay, Fuca Strait, twenty-five 

 miles eastward from Cape Flattery ; Popof Island, Alaska, 3563. 



Mytilus middendorffi Grewingk. 



Mytilus middendorffi GREWINGK, Beitr. NW. Am., p. 287, pi. vn, figs. 3a- 

 3C, 1850. 



Localities. Unga Island, and on Kadiak Island near Cape Tonki, 

 Igatskoi Bay (Grewingk) . 



A peculiar Mytilus with the distal portions of the valves sculptured 

 by two or three broad plications. It is represented in the Pliocene 

 of Oregon by Mytilus condoni Dall which is somewhat similarly 



sculptured. 



Cardium ciliatum Fabricius. 



Cardium ciliatum FABRICIUS, Fauna Gronl., p. 410, 1780. G. O. SARS, Fauna 

 Reg. Arct. Norv., p. 46, pi. 5, figs. 4a-4b, 1878. 



Locality. Popof Island, 3563. 



