_Rocky Mountain National Park_, 1 (MM). _Boulder Co._:
Unspecified, 1 (NM). _Gunnison Co._: 7 mi. S and 7 mi. W
Gunnison, 8,150 ft., 1. _Saguache Co._: 5 mi. N and 22 mi. W
Saguache, 10,000 ft., 2. _Archuleta Co._: Unspecified, 1 (MM); 5
mi. S and 25 mi. W Antonito, 9,600 ft., 3. _Costilla Co._:
Unspecified, 1 (MM). New Mexico: _Taos Co._: 23 mi. S and 6 mi.
E Taos, 8,750 ft., 3.

_E. m. pallidus_: Montana: _Fergus Co._: Unspecified, 1 (MM).
_Sweetgrass Co._: Unspecified, 1 (MM). Wyoming: _Campbell Co._:
4 mi. S and 3 mi. W Rockypoint, 1; Ivy Creek, 8 mi. W and 5 mi.
N Spotted Horse, 3; Middle Butte, 6,010 ft., 38 mi. S and 19 mi.
W Gillette, 1.

_E. m. silvaticus_: South Dakota: _Pennington Co._: Unspecified,
1 (MM). _Custer Co._: Unspecified, 2 (MM). Wyoming: _Weston
Co._: 1-1/2 mi. E Buckhorn, 6,150 ft., 3.

#Eutamias townsendii# (Bachman)

Figure 3

Pelage tawny to olivaceous; stripes obscure and underparts
tawny, or stripes conspicuous and underparts white; tail slender
and sparsely haired; size large; skull largest in the subgenus
_Neotamias_.

Baculum: Shaft thin; keel low, 1/5 of length of tip; tip 32 per cent of
length of shaft; angle formed by tip and shaft 130 deg.; distal 1/5 of
shaft slightly compressed laterally; base deeper and wider than shaft;
shaft short, 2.24 mm.

Differs from _E. speciosus_, _E. panamintinus_, _E. umbrinus_, _E.
palmeri_, and _E. bulleri_, in base not markedly widened, shaft thinner,
tip proportionally shorter; from _E. quadrivittatus_, _E. ruficaudus_,
_E. cinereicollis_, and _E. quadrimaculatus_, in shaft thinner, baculum
shorter and smaller; from _E. sonomae_, in ridges on either side of tip
not enlarged, keel proportionally higher; from _E. amoenus_ and _E.
dorsalis_, in base widened and thickened, baculum usually shorter; from
_E. merriami_, in being markedly shorter, and having base widened and
deepened but not incised dorsally.

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

_Specimens examined_: 2.

_E. townsendii townsendii_: Oregon: _Multnomah Co._: Portland, 1
(NM).

_E. t. cooperi_: Oregon: _Hood Co._: Brooks Meadow, 4,300 ft., 9
mi. ENE Mount Hood, 1.

#Eutamias sonomae# Grinnell

Figure 4

Upper parts rich reddish, more or less dulled by gray; backs of
pinnae of ears nearly bare; tail long and bushy; size la