68 THOMOMYS. 



Thomomys operarius Merriam. Biological Survey coUoction. 



Pnx-. Biol. Soc. Wash., XI, pp. ilo-i'ld, July 15, 1897. 

 Il^lf. Skin and skull. Adult inalc. Koolor, Inyo County, Cali- 

 fornia. November 29, 181M). Collected by E. W. Nelson. Origi- 

 nal iiunibiM' l. 



Well-made skin in good condition; skull perfect, except for broken crown of 

 last left lower molar. 



rhomomys douglasi oregonus Merriam, Biological Survc}?^ coll. 



Proc. Biol. Soc. Wash., XIV, p. 115, July 19, 1901. 

 56939. Skin and skull. Adult male. Oregon C'ity, Oregon. October 

 24, 1893. Collected by C. P. Streator. Original number 3340. 

 Well-made skin in good (•onditi(jn; skull perfect. 

 Thomomys orizabse Merriam. Biological Survev collection. 



Proc. Biol. Soc. Wash., VIII, p. 145, December 29, 1893. 

 53616. Skin and skull. Adult female. Mount Orizaba, Puebla, 

 Mexico. Altitude 9,500 feet. April 25, 1893. Collected by E. W. 

 Nelson. Original number 4744. 



Well-made skin in good condition; skull perfect. 



Thomomys angularis pascalis Merriam. Biological Survey coll. 



Proc. Biol. Soc. Wash., XIV, p. Ill, July 19, 1901. 

 iziH- Skin and skull. Adult male. Fresno, California. March 4, 

 1892 (not May 4, 1892, as in original description). Collected by C. 

 B. Streator. Original number 1634. 



Well-made skin in good condition; skull perfi'ct. 

 Thomomys perditus ^lerriam. Biological Survey collection. 



Proc. Biol. Soc. Wash., XIV, p. 108, July 19, 1901. 

 f lol- "^ki" 'i"*^ skull. Adult male. Lainpazos, Nuevo Leon, Mexico. 

 January 22, 189 L. Collected by C. B. Streator. Original num- 

 ber 512. 



Well-made skin in good condition; skull perfect, except for broki'U right lower 

 incisor. 



Thomomys peregrinus Merriam. Biological Survey collection. 



Proc. Biol. Soc. Wash., VIII, p. 146, December 29, 1893. 

 50130. Skin and skull. Young adult female. Salazar, IVIexico, 

 Mexico. October 24, 1892 (not October 23, 1892, as in original 

 description). Collected by E. W, Nelson. Original number 3668. 

 Well-made skin in good condition; skull perfect. 

 Thomomys aureus perpes Merriam. I^iological Survey collection. 

 Proc. Biol. Soc. Wash., XIV, p. Ill, July 19, 1901. 

 fl'li;^. Skin and .skull. Adult male. Lone Pine, Owen.s Valley, 

 California. necem])er 23, iSlto. Collected ])y E. W. Nelson. 

 Original numlx'r 145. 



Well-made skin in good condition; skull i)erfect. 



