UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 5, No. 15, pp. 235-242 ANDREW C. LAWSON, Editor 



NOTES ON A COLLECTION OE FOSSIL 

 MAMMALS FROM VIRGIN VALLEY, 

 NEVADA. 



BY 



James Williams C4idley. 



CONTENTS. 



PAGE 



Hypohippus? equinus (Scott) 236 



Merychippus isonesus (Cope) 238 



Merychippus, sp. indet. (1) 238 



Merychippus, sp. indet. (2) 239 



Merychippus, sp. indet. (3) 239 



Equine astragali 240 



Palaeomeryx ? borealis (Cope) 241 



Conclusions 242 



Through the kindness of Dr. John C. Merriam of the Univer- 

 sity of California, I have recently had plaeed in my hands for 

 study and determination an interesting little collection of fossils 

 from Virgin Valley, Nevada. The material consists principally 

 of fossil horse remains representing at least two genera and five 

 species of the Equidae. One species referable to a genus of the 

 Cervidae is also represented in the lot. Some of the species are 

 probably new, but the material is too fragmentary for little more 

 than generic determination, and the specimens are not suffi- 

 ciently characteristic to warrant burdening literature with added 

 names not well established by distinctive specific characters. 



The object of the present paper, therefore, is to report the 

 forms represented from this locality and to describe the more 

 important specimens of the collection with the primary object of 



