11 2 
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. 1 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 
MOLLXJSCA 
PELECYPODA 
Glycimeris kashevarofi Grewingk. 
Pectunculus kcischewarowi Grewingk, Beitr. NW. Am., p. 279, pi. v, figs. 
3 a ~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 Kray, 1850, 8°, pp. iv, 351, and seven plates. 
