NEOZOIC INVERTEBRATE FOSSILS 



A REPORT ON COLLECTIONS MADE BY THE 

 EXPEDITION 



BY WILLIAM HEALEY DALL 

 I. EOCENE FOSSILS FROM ALASKA PENINSULA 



THE Tertiary and post-Tertiary invertebrate fossils col- 

 lected during the expedition and which were confided to 

 me for examination and report, were obtained in three 

 different regions. 



Beginning with the older formations, the first region 

 comprises an area situated on the northwest shore of 

 Stepof or Stepovak 1 Bay on the southern side of 

 Alaska Peninsula in west longitude about 160. Here are 

 a couple of small bays or coves, one of which, named alter 

 Admiral Chichagoff of the Russian navy, is called Chi- 

 chagof 2 Cove and is separated by a pair of projecting 



1 The name on the charts, Stepovak, is a corruption of Stepovakho, which is 

 the genitive form of the masculine proper name Stepoff, probably one of the 

 persons connected with the surveys of this region carried on by the Russian 

 American Company, 1840-50. In English the name would have been Stepoff's 

 or Stepoff Bay. 



*This name is sometimes pronounced by the natives ' Chicagoff ' which is 

 merely an erroneous rendering of Chichagoff. 



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