112 ALASKA GEOLOGY 



lected by Mr. Trevor Kincaid in 1899, during the Harri- 

 man Expedition. 



This horizon contains several species identical with 

 those of the Miocene at Astoria, Oregon, and on the south 

 shore of the Strait of de Fuca, State of Washington. It 

 is probably of identical age. To this horizon, following 

 Professor Condon in the American Naturalist in 1880, 

 the writer in 1892 gave the name Astoria Group. It is 

 that portion of the Pacific coast Miocene north of Cape 

 Mendocino which conformably and immediately follows 

 the Kenai Group of Oligocene lignite and leaf beds, and 

 is probably itself succeeded by the series of which an ex- 

 cellent exposure is found at Coos Bay, Oregon, and which 

 was named by Diller the Empire beds. 



A number of species from the Unga locality, and also 

 from the same horizon on other islands and the mainland, 

 are described or cited by Grewingk in his classical me- 

 moir on the geognosy of northwest America. * Those 

 cited from Unga are included in this list to make it as 

 complete an account as possible of the fauna of the Mio- 

 cene beds of Zakharof Bay, Unga Island, and the north 

 shore of Popof Island. 



Those from other localities, not proven to be of the 

 same horizon, are omitted. 



LIST OF SPECIES 



MOLLUSCA 

 PELECYPODA 



Glycimeris kashevarofi Grewingk. 



Pectunculus kascheivarowi GREWINGK, Beitr. NW. Am., p. 279, pi. v, figs. 

 3a-d, 1850. 



Localities. Unga Island, the peninsula of Alaska, near Pavlof vol- 

 cano, and the island of Kadiak, near Tonki Cape, Igatskoi Bay. 



1 Beitrag zur Kenntniss der orographischen und geognostischen Beschaffen- 

 heit der Nordwest Kiiste Amerikas, mit den anliegenden Inseln. Von Dr. C. Gre- 

 wingk, St. Petersburg, Karl Kraj, 1850, 8, pp. iv, 351, and seven plates. 



