Vol. XXVII, pp. 115-118 July 10, 1914 
PROCEEDINGS 
OF TIIF. 
BIOLOGICAL SOCIETY OF WASHINGTON 
ET.EVEN NEW SPECIES AND SUBSPPXIES OF POCKET 
GOPHEPS OP THE GENUS THOIMOMYS. 
BY VERNON BAILEY. 
The following brief diagnoses of eleven new pocket gophers 
are published in advance of a monograph of the genus Thoinomi/s, 
now nearing completion. The types are all in the Biological 
Survey Collection in the U. S. National Museum. 
Thomomys talpoides bullatus subsp. nov. 
S.\GE-BRUSH (40PHER. 
Type from Powderville, Montana. Adult d', No. 55,795, U. S. Nat. 
Mns., Biological Survey Collection. Collected July 21, 1893, by Dr. A. K. 
Fis^b.er; original numl)er, 1402. 
Chrtvcicters.—Size of tcilpoides, l)ut witb largi'r andital bullap, ligbter 
dentition and brighter colors. Con.^iderably larger than clnsrus, with 
less gray on cheeks. TTpperparts light butty hazel, brightest on crown, 
ear patch Idackish; lowerparts huffy, sometimes with white on chin; feet 
and tail whitish. 
.IfectsuTevienls of type.—Yf)tal length, 238; tail vertebiae, /2, hind foot, 
30. 
Thomomys talpoides caryi subsp. nov. 
RIGIIORX MOUNTAIN GOPHER. 
Type from the head of Trapper Creek at 9500 feet altitude in the Big¬ 
horn .Alountains, Wyoming. Adult 9, No. 108,940, U. S. Nat. AIus., 
Biological Survey Collection. Collected June 10, 1910, liy Merritt Cary; 
original numlHU-, 199:1. 
Characterfi.—Size about the same as c/r.s/r.s, or slightly smaller; skull 
with smaller bullae and wider iuteritarietal; colons slightly darker, without 
gray cheeks. Ppperparts dull grayish brown, with plumbeous no.se and 
l)lackish ear patch; lowerparts rich huffy, with white ou chin and some¬ 
times on breast; feet soiled whitish; tail gray or huffy with whitish ti]). 
27—Proc. Biol. Soc. W.\sh., Vot.. XXVIl.l'Jl-l. (115) 
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. 
Bailei/—El(wen Neio Species and Subspecies of Pocket Gophere:. 117 
Thomomys neglectus s[). iiov. 
SAX (lAHKIKL flOI'llKli. 
Type from Sun Antonio I’lnik (liear Flat Meadows at (>-100 feet altitude) 
in the San (ial)riel Mountains, (’alifoi-nia. Adult c?, No. i;>7,cS()0, th S. 
Nat. Alns., Biolotjieal Survi'y (’nllee.lion. (Collected July 2;!, lOOd, by 
James II. (Taut; orioinal numhei-, :’>7I0. 
Characters.—Size medium, skull lone; and narrow with almost straight 
dor.sal outline, dolor very dark with e.xee.ss of clear black; upperparts 
dark f;ray produced by a heavy mixture of black-tipped hairs over dull 
l)nft’; nose, face, and (uir patch l)lackish; tail "ray, feet whitish; lower- 
parts dull hutr. 
Measurements of type.—Total length, 220; tail vertehree, 77; hind foot, 
81 (82 measured dry). 
Thomomys mearnsi * sp. nov. 
AIEARNS GOPHER. 
Type from Gray’s Ranch in Animas Valley, southwest corner of New 
Alexico. Adult d', No. 157,008, F. S. Nat. Alns., Biological Survey 
Collection. Collected August 10, 1908, by E. A. t-roldman; original num¬ 
ber, 19,989. 
Characters.—Slightly smaller than fulvus ; skull short and wide with 
very slender, projecting incisors, much as in nelsont. Color, upperparts 
dull cinnamon with blackish nose and ear patches ; lowerparts pale cin¬ 
namon; tail huffy gray; feet whitish. 
Measurements of type.—Total length, 220; tail vertebra?, 07; hind foot, 
81. 
Thomomys fuscus columbianus snbsp. nov. 
COLUMBLV GOPHER. 
Type from Touchet, AValla Walla County, AVasliington. Adult cJ*, 
No. IfH?' U. S. Nat. Alns., Biological Survey Collection. Collected 
September 10, 1890, by Clark P. Streator; original number, 284. 
Characters.—Size much larger than fuscus, slightly larger than quad- 
ratus ; skull heavier than that of quadratus ; colors paler than either, 
about as infisheri. Upperparts light fawn color or huffy gray; sides and 
belly pale huffy gray; ear and postanricnlar patch black; nose slaty; tail 
gray with white tip; feet wldtish. 
Measurements of type.—Total length. 209; tail vertebrae, 60; hind foot, 
28. 
Thomomy.s fuscus saturatus snl)sp. nov. 
COEUR D’ALENE GOPHER, t 
Type from Silver (nearSaltese) in the western corner of AlissonlaCounty, 
Alontana, at 4300 feet altitude, in the Coeur d’Alene Alonntains. Ailnlt 
*I take pleasure in naming' this goplier for Dr. E. .\. Mearns, who has contriluited 
so much to our knowledge of the mammals along the northern boundary of Mexico. 
118 Proceedings of the Biological Society of Washington. 
S'. No. fgifi, U. Nat. ^lus., Biological Survey Collection. Collected 
June 20, 1891, by Clark P. Streator; original number, 970. 
Characters.—Considerably larger tban fuscus ; skull long and bigb with 
narrow braincase and wide nasals. Color darker and richer tban in 
fascns; iijiperparts dark liazel, becoming more yellowisb on sides, and 
this shading into bulfy wash on lowerparts; ear patches l)lack ; nose 
plumbeous; I'eet and tail butTy gray. There is rarely a trace of white on 
chin or throat. 
Measurements of type.—Total length, 22o; tail vertebrae, 77; bind foot, 
no. 
Thomomys fuscus loringi subsp. nov. 
ALBERTA GOPHER. 
Type from South Edmonton, .Ul)erta. Adult cJ*, No. 08,74(1, U. S. Nat. 
iMus., Biological Survey Collection. Collected Septeml)er 23, 1894, by 
J. A. Boring; original number, 2437. 
Characters.—Similar to fuscus but sliglitly larger and duller colored, 
Avitb relatively heavier dentition, and small, circular interparietal; ears 
small and pointed as in the/rschs group. Color in winter pelage (Sep¬ 
tember 2))): Upperparts dull russet brown, becoming rich bufJ on sides; 
nose slaty gray; small ear patch black; lowerparts rich buft'y over plum¬ 
beous; chin and small spot on breast white; feet soiled whitish; tail jrale 
huffy. Cither pelages not known. 
Measurements of ty])C.—Total length, 199; tail vertel)rm, 47; bind foot, 
25. 
Thomomys nevadensis atrogriseus subsp. nov. 
SNAKE RIVER GOPHER. 
Type from Nampa, Idaho. Adult c?, No. 181,198, tl. S. Nat. JIus., 
Biological Survey Collection. Collected IMarcli 15, 1913, by L. E. 'Wyman; 
original number, 35. 
Characters. —Xhowi the size of nevadensis and also dichromatic, but 
darker colored in gray phase and blacker in melanistic phase. Skull 
relatively wider at base and with shorter, thicker pterygoids. Color in 
gray phase: Upperparts dark huffy gray or sooty buff’; nose and face 
blackish; ear patch black; feet and tail dirty gray; lowerparts washed 
with rich buff'; cheek pouches lined with black and white; chin white. 
Color in black phase: Dull slaty black all over except white patch on 
chin and white toes, and usually lower part of feet. 
Measurements of type.—Total length, 315; tail vertebra?, 100; hind foot, 
38.