Vol. 6] 



Merriam: Virgin Valley and Thousand Creek. 



253 



by Miss Kellogg, of which five occur at Virgin Valley and 

 thirteen at Thousand Creek. Three species, Aplodontia alex- 

 andrae, Mylagaulus monodon, and Lepus vetus are common to 

 the two faunas. 



The species are distributed as follows : 

 Virgin Valley 

 Aplodontia alexandrite Furlong. 

 Mylagaulus monodon Cope. 

 Mylagaulus pristinus Douglass. 

 Pulaeolagus nevadeusis Kellogg. 

 Lepus vetus Kellogg. 



Thousand Creek 

 Arctomys nevadeusis Kellogg. 

 Arctomys minor Kellogg. 

 Cit ell us, sp. 



Aplodontia alexandrae Furlong. 

 Mylagaulus monodon Cope. 

 Eucastor lecontei (Merriam, J. C.) ? 

 Dipoides, sp. 



Entoplitychus minimus Kellogg. 

 Peromyscus antiquus Kellogg. 

 Peromyscus (1) , sp. 

 Diprionomys parvus Kellogg. 

 Diprionomys magnus Kellogg. 

 Lepus vetus Kellogg. 



SCIURIDAE 

 ARCTOMYS NEVADENSIS Kellogg 

 Arctomys nevadensis Kellogg, Univ. Calif. Publ. Bull. Dept. Geol., vol. 

 p. 422, figs, la to 2, 1910. 



Occurrence : Thousand Creek Beds, Thousand Creek, Hum- 

 boldt County, Nevada. 



ARCTOMYS MINOR Kellogg 

 Arctomys minor Kellogg, Univ. Calif. Publ. Bull. Dept. Geol., vol. 5, 

 p. 425, figs. 3 to 7, 1910. 



Occurrence : Thousand Creek Beds, Thousand Creek, Hum- 

 boldt County, Nevada. 



CITELLUS, sp. 



Citellus, sp., Kellogg, Miss Louise, Univ. Calif. Publ. Bull. Dept. Geol., 

 vol. 5, p. 427, fig. 8, 1910. 



A fragmentary specimen comprising a part of the lower jaw 

 with Mj, apparently represents this genus. 



Occurrence : Thousand Creek Beds, Thousand Creek, Hum- 

 boldt County, Nevada. 



