_Description._--_Color pattern_: Crown Smoke Gray mixed with Ochraceous Tawny; upper facial stripe Fuscous; other facial stripes Fuscous or Fuscous Black mixed with Tawny; hairs inside posterior part of pinna Light Ochraceous Buff; anterior margin of ear Ochraceous Tawny; posterior margin of ear and postauricular patch grayish white; median dorsal dark stripe black with Ochraceous Tawny along margins; other dorsal dark stripes black mixed with Ochraceous Tawny; median pair of dorsal light stripes grayish white with Ochraceous Tawny along margins; lateral pair of light dorsal stripes white; sides Ochraceous Tawny or Light Sayal Brown; rump and thighs Smoke Gray mixed with Cinnamon Buff; dorsal surface of tail Fuscous Black mixed with Cinnamon Buff; ventral surface of tail Sayal Brown, Fuscous Black along margin, and Cinnamon Buff or Ochraceous Buff along outermost edge; antipalmar and antiplantar surfaces of feet Light Pinkish Cinnamon or Pinkish Buff; underparts grayish white mixed slightly with Buff. _Skull_ and _Baculum_: Small but proportionally the same as in other subspecies of _E. minimus_. _Comparisons._--From _E. m. pallidus_, the subspecies to the east, _E. m. consobrinus_ differs in: Color darker; size smaller; skull narrower and shorter; baculum shorter. From _E. m. confinis_, the subspecies from the Big Horn Mountains, _E. m. consobrinus_ differs in: Over-all tone of upper parts less grayish; underside of tail lighter; skull narrower and shorter; baculum shorter. For comparisons with _E. m. minimus_ see the account of that subspecies. _Remarks._--Specimens of this subspecies from the area between the Uinta Mountains and the mountains of the Wyoming and Wind River ranges, are clearly intergrades between _E. m. consobrinus_ and _E. m. minimus_ and are here referred to _E. m. consobrinus_. These specimens are paler than typical _E. m. consobrinus_ and considerably darker than _E. m. minimus_. These intergrades came from an area where the habitat is intermediate between that of _E. m. consobrinus_ and _E. m. minimus_ but more nearly like that of _E. m. consobrinus_. _Specimens examined._--Total number, 135. _Yellowstone Park_: Fishing Bridge, 1 (MM). _Park Co._: SW slope Whirlwind Peak, 9,000 ft., 1. _Teton Co._: N end Blacktail Butte, 6,600 ft., 1 mi. E Moose, 1; Bar BC Ranch, 6,500 ft., 2-1/2 mi. NE Moose, 2; 3-3/4 mi. E Moose, 6,300 ft., 3; 3-3/4 mi. E and 3/4 mi. S Moran, 6,210 ft., 2; 5 mi. S Moran, 1 (FC); 2 mi. S Elk Ranch, 2 (FC); 7 mi. S Moran, 1 (FC); 19 mi. E and 2 mi. S Moran, 1; Flat Creek Pass, 1 (MM); Flat Creek-Crystal Creek Divide, 1 (MM); Flat Creek-Granite Creek Divide, 5 (MM); Dry Hollow, Jackson, 1 (MM); Jackson, 4 (MM); Jenny Lake, 2 (MM); Sheep Creek, Jackson, 1 (MM).