ABSTRACTS AND DISCUSSIONS OF PAPERS 169 



ELECTION OF OFFICERS 



The following officers were elected for the ensuing year : 



President, John C. Merriam. 

 Vice-President, Ealph Arnold. 

 Secretary-Treasurer, Chester Stock. 



The presentation of papers was then taken up. 



TITLES AND ABSTRACTS OF PAPERS PRESENTED AND DISCUSSIONS THEREON 



SYSTEMATIC POSITION OF SEVERAL AMERICAN TERTIARY LAOOMORPHS 



j:v lee r. dick 



{Abstract) 



A study of the teeth of a number of lagomorphs from the American Tertiary 

 has shown that these forms can not be included in the genus Lepus. Three 

 new genera are therefore proposed for the fossil forms. The paper presents 

 also a brief discussion of the phytogeny of this group. 



Discussion 



Dr. J. C. Merriam stated that rabbits were commonly found in the Tertiary 

 formations of the West. The forms from the John Day Oligocene had been 

 referred to the genus Lepus, but that the characters recognized by Mr. Dice 

 warranted the separation of these forms from the genus Lepus and the defining 

 of a new genus. 



PLEISTOCENE MAMMAL FAUNA OF HAWVER CAVE, A FISSURE DEPOSIT 

 NEAR AUBURN, CALIFORNIA 



BY CHESTER STOCK 



(Abstract) 

 A survey of all results of work on the Hawver Cave fauna. 



Discussion 



The discussion following the reading of this paper led to the conclusion that 

 the region of Hawver Cave during the Pleistocene was a plateau quite deeply 

 dissected by the American River. Thus it was not surprising to find a form 

 like Mylodon, which appears to have been ill adapted to the rough country. 



FAUNA OF THE RODEO PLEISTOCENE 

 BY JOHN C. MERRIAM. CHESTER STOCK. AND C. 1.. MOODY 



(Abstract) 



For many years vertebrate and invertebrate material has been collected from 

 the Pleistocene beds exposed along San Pablo Bay and Suisun Bay. The fauna 



