116 Proceedings of the Biological Society of Washington. 
Measurements of tgpe. —Total lengtli, 196; tail vertebrae, 54; liiiid foot, 
26. l\Iore adult $ toi)otype, 203, 58, 28. 
Ihomomys talpoides nebulosus subpp. uov. 
BLACK HILLS GOPHER. 
Tjipe from Sand Creek Canyon, Black Mills, AYyoming (Jack Boyden’s 
Ranch, 5 miles above month of canyon, at 3750 feet altitude). Adult c?, 
No. 202,495, U. S. Nat. IMns., Biological Survey Collection. Collected 
August 25, 1913, by Vernon Bailey; original number, 9508. 
Characters. —Size of tatpoides, skull slender, less ridged, dentition 
lighter, bnlke slightly more rounded. Color warm brown, much as in 
fossor. r^pperparts dull walnut brown; nose pluml)eous or dusky; ear 
patch blackish ; lowerparts bufl’y, generally with white on chin and some¬ 
times on breast; feet and tail whitish gray or huffy. 
Measurements o/type.—Total length, 230; tail vertebra^, 66; hind foot, 
approximately 32 (27 without claws). 
. Thomomys pryori sp. nov. 
PRYOR i^tOUNTAIN GOPHER. 
Type from the Pryor ^fountains, Montana, at 6000 feet altitude on head 
of Sage Creek. Adult cJ', No. 66,469, U. S. Nat. Mus., Biological Survej' 
Collection. Collected July 16, 1894, l)y' Vernon Bailej^; original number, 
46f6. 
Characters. —Size of clusius, with low, wide skull, short nasals and 
projecting incisors. Color darker than that of clusius ; upperimrts dull 
walnut brown, a))out as in fossor ; nose plumbeous; cheeks dark gray; 
ear patch black; lowerparts dark huff with no trace of white in topotype 
series; feet and tail soiled whitish or huffy. 
Measxirements o/h/pe.—Total length, 210; tail vertehrte, 60; hind foot, 
29. 
Thomomys bottae minor suhsp. nov. 
MENDOCINO GOPHER. 
Type from Ft. Bragg, 5Iendocino Co., California. Adult cJ', No. 
146,463, LI. S. Nat. IMus., Biological Survey Collection. Collected 
November .30, 1905, by James H. Gant; original number, 4187. 
Characters.—8\ze smaller than bottae; skull narrower and slenderer 
with especially slender rostrum and deeply emarginate posterior tip of 
nasals. Color slightly darker than in bottae; upperparts dark cinnamon 
brown, heavily obscured with black, and in most specimens becoming 
almost black on nose, face, and around ears; feet white; tail grayish; 
lowerparts ochraceous-buff; lips and lining of cheek pouches usually 
wdiite. 
Measurements o/type.—Total length, 226; tail vertehrie, 73; hind foot, 
29. 
