Stanley.

Eutamias dorsalis (Baird)

_Diagnosis._--Size medium to large; general tone of upper parts
Smoke Gray; dorsal stripes indistinct or obsolete; often brightly
colored at base of tail; keel of baculum proportionally high,
approximately 1/3 of length of tip; skull longer than 34.5 mm.

_Comparisons._--From _E. umbrinus_, _E. dorsalis_ differs in:
Dorsal stripes faint; skull smaller; base of baculum not noticeably
expanded; general tone of upper parts grayer.

For comparisons with _E. minimus_ and _E. amoenus_ see the accounts
of those species.

[Illustration: FIG. 2. Known occurrences and probable geographic
distribution of _Eutamias amoenus_ and _Eutamias dorsalis_ in
Wyoming. See figure 1 for explanation of symbols.

1. _E. amoenus luteiventris_
2. _E. dorsalis utahensis_]

Eutamias dorsalis utahensis Merriam

_Eutamias dorsalis utahensis_ Merriam, Proc. Biol. Soc. Washington,
11:210, July 1, 1897.

_Type._--Male, adult, skull and skin, No. 186457 (NM); from Ogden,
Weber County, Utah; obtained on October 9, 1888, by Vernon Bailey;
original No. 289.

_Diagnosis._--Size medium; dorsal stripes faint; baculum not
noticeably widened at base.

_Description._--_Color pattern_: Crown Pale Smoke Gray mixed with
Cinnamon; upper facial stripe Fuscous; other facial stripes Sayal
Brown mixed with Fuscous or Fuscous Black; anterior margin of ear
Ochraceous Tawny; posterior margin of ear and postauricular patch
grayish white; median dorsal dark stripe Fuscous or black; other
dorsal dark stripes black and mixed with gray, sometimes barely
discernible; dorsal pair light stripes Smoke Gray; lateral pair of
light stripes creamy white; rump and thighs Pale Smoke Gray mixed
with Cinnamon; dorsal surface of tail Fuscous Black mixed with
Tilleul Buff; underside of tail Cinnamon Buff or Pinkish Buff,
Fuscous Black around margin and Tilleul Buff around outermost edge;
antipalmar and antiplantar surfaces of feet Cinnamon Buff;
underparts creamy white; sides Pinkish Cinnamon or Light Pinkish
Cinnamon. _Skull_: Size medium; braincase well inflated; zygomata
strong, moderately appressed to cranium. _Baculum_: Small; keel
approximately 1/3 of length of tip.

_Remarks._--Only a few specimens of this subspecies have ever been
taken in Wyoming. Little is known about the habits of t