520 BULLETIN 17S, UNITED STATES NATIONAL MUSEUM 



56050. Skin and skull. Adult male. "West slope of Bighorn 

 Mountains, altitude 8,000 feet, "Washakie County, Wyo. Sep- 

 tember 18, 1893. Collected by V. Bailey. Original number 

 4383. 



Well-made skiu in good condition: skull Grade A. 



f Citellus tridecemlineatus arenicola Howell. 



Proc. Biol. Soc. Washington 41: 213, Dec. IS. 192S. 

 87686. Skin and skull. Adult male. Pendennis. Lane County. 

 Kans. April 22, 1897. Collected by J. A. Loring. Original 

 number 3988. 



Well-made skin in good condition; sknll Grade A. 



f Citellus tridecemlineatus hollisteri Bailey. 



Proo. Biol. Soc. Washington 26: 131. :Ma.v 21. 1913. 

 119025. Skin and skull. Adult female. Elk Valley, Mescalero 

 Indian Reservation, Sacramento Mountains, altitude 8,000 feet, 

 Lincoln County, X. Mex. September 11, 1902. Collected by V. 

 Bailey. Original number 7963. 



Well-made skin in good condition ; skull Grade A. 



f Citellus tridecemlineatus monticola Howell. 



Proc. Biol. Soc. Washington 41: 214. Dec. 18. 192S. 

 209255. Skin and skull. Adult male. Marsh Lake (also called 

 Big Lake), AMiite Mountains, altitude 9,000 feet, Apache 

 County, Ariz. June 15, 1915. Collected by E. A. Goldman. 

 Original number 22616. 



Well-made skin in good condition : skull Grade A. 



*Spermophilus tridecemlineatus pallidus J. A. Allen. I^ctotype. 



Monographs of North American Rodentia. p. 872, Aug. 1877. 

 =CitcUus tridecemlineatus pallidum (J. A. Allen). See Trouessart, Catalogus 



Mammalium tam Viventium quam Fossilium, Suppl., p. 341, 1904. 

 16237. Skin only. ^louth of Yello^Ystone River. Mont. August 18. 

 1857. Collected by F. V. Hayden. 



Skin was formerly poorly made but has recently been remade and is 

 now in fairly good condition. 



Allen, Bull. Amer. Mus. Nat Hist. 7: 328, 1895, writes: "I separated 

 (Proc. Boston Soc. Nat. Hist. 16: 291, 1874) the pale western form here 

 referred to as Spermophilus ttidcccmliucaius pallidus. without, however, 

 giving any diagnosis. This was supplied three years later in my mono- 

 graphic revision of the American Sciuridae. 



"In now separating additional forms of this group, I would restrict 

 pailidus to tlie arid region of the Plains, from the Upper Missouri south- 

 ward to eastern Colorado, western Kansas, etc., and designate as its 

 type region the plains of the Lower Yellowstone River." 



Howell (North Amer. Fauna 56: 112, 193S) has made No. 16237, taken 

 at the mouth of the Yellowstone, the lectotype. 



