PEROGNATHUS MICRODIPODOPS. 55 



Perognathus flavescens perniger Osgood. Bioloo-ical Surv^ey coll. 



Proc. lUol. S(K-. \Va,<h., XVII, jip. ILT-IL'S, June 9, 1904. 



57725. Skill uiul skull. Youiio- fetiiale. Vermilion, South Dakota. 



Aug-ust 22, 1889. Collected by G. S. Agersborg-. 



Skin in fair condition; abdominal incision not sewed up; skull perfect, except 

 for broken zygomata. 



Perognathus pernix rostratus Osgood. Biological Surv^ey collection. 



North Amer. Fauna, Xo. 18, p. 51, pi. 1, lig. 8, September 20, 1900. 



95S18. Skin and skull. Young adult male. Camoa, Rio Mayo, 

 Sonora, Mexico. October 28, 1898. Collected by E. A. Goldman. 

 Original number 18167. 



Well-made skin in good condition; skull perfect. 



Perognathus penicillatus siccus Osgood. Biological Survey coll. 



Proc. Kiol. Soc. Wash., XX, p. L'O, February 2;i, 1907. 



146890. Skin and skull. Adult male. Ceralbo Island, Lower Cali- 

 fornia, Mexico. February 13, 19(>6. Collected by E. W. Nelson 

 and K. A. Goldman. Original number 19181. 



Well-made skin in good condition; skull perfect. 



Perognathus (Chaetodipus) stephensi Merriam. Biol. Survey coll. 

 Proc. Acad. Nat. !^ci. Phila., 1894, ]). 267, fig. 7, September 27, 1894. 



158^3- ^l^in and skull. Adult male. Mesquite Valley, northwest 

 arm of Death Valley, California. April 6, 1891. Collected by 

 F. Stephens. Original number 2r>,S. 



Well-made skin in good condition; skull perfect. 



Perognathus hispidus zacatecae Osgood. Biological Survey coll. 

 North Amer. Fauna, No. 18, j). 45, September 20, 1900. 



91877. Skin and skull. Young adult female. Valparaiso, Zacatecas, 

 Mexico. December Ki, 1897. Collected by'E. A. Goldman. 

 Original number 11968. 



Well-made skin in goixl condition; skull perfect. 



Genus M ICRODIPODOPS. 



Microdipodops californicus Merriam. Biological Survey collection. 



Proc. Hinl. Sue. Wash., XIV, p. 128, July 19, 1901. 



101227. Skm and skull. Young adult male. Sierra Valley, near Vin- 

 ton, Plumas County, California. August 7, 1900. Collected by 

 Dr. W. K. Fisher. Original number 1596. 



Well-made skin in good cdndition; skull perfect, except for slight injury to 

 lower li]) of foramen magnum. 



