138 Bulletin Americati Museum of Natural History. [Vol. XII. 



Summary, 



The principal points brought out in the foregoing paper may 

 be briefly summarized as follows : 



(i) The tracing of the Daphcenus ancestry back into the 

 Wasatch Eocene by way of Frodaphcenus and Uintacyon, which 

 latter has always been considered a Creodont. 



(2) The establishment of the relationship oi^ Daphcenus to 

 Temnocyon, and that of Temnocyon to the living genus Cyan. 



(3) Tracing the ancestry of the Canis-Cynodictis line back into 

 the Eocene through Procynodictis and Vulpavus. 



(4) Some additional points in the structure of Cynodictis. 



(5) The descent of certain South American Foxes from North 

 American Miocene species, with the establishment of a new genus, 

 Nothocyon, for their reception. 



(6) Classification of the Miocene genera of the Canidae. 



(7) The discovery of the origin of the Procyonidse from the 

 Canidae through the new genus Phlaocyon. 



(8) The discovery of the genus Viverravus and the establish- 

 ment of a new family. 



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