General tone of upper parts smoky gray; dorsal stripes
indistinct or obsolete; skull large.
Baculum: Shaft thin; keel low, 1/5 of length of tip; tip 29 to 40 per
cent of length of shaft; angle formed by tip and shaft 140 deg.; distal 1/2
of shaft slightly compressed laterally; shaft short to medium, 2.64 to
3.69 mm.
Differs from _E. speciosus_, _E. panamintinus_, _E. umbrinus_, _E.
palmeri_, and _E. bulleri_, in base not widened, shaft thinner; from _E.
quadrivittatus_, _E. ruficaudus_, _E. cinereicollis_, and _E.
quadrimaculatus_, in shaft thinner, baculum usually shorter; from _E.
merriami_, in shaft markedly shorter, base not incised dorsally, tip
proportionally longer.
For comparisons with _E. alpinus_, _E. minimus_, _E. townsendii_, _E.
sonomae_, and _E. amoenus_, see the accounts of those species.
_Specimens examined_: 12.
_E. dorsalis dorsalis_: Arizona: _Yavapai Co._: 3 mi. N Ft.
Whipple, 5,000 ft., 1 (BS). _Gila Co._: Carr's Ranch, Sierra
Ancha Mountains, 1 (BS). _Pima Co._: Unspecified, 1 (MM). New
Mexico: _Valencia Co._: Mount Taylor, 1 (MM); 1 mi. N Cebolleta,
1 (MM). _Socorro Co._: San Mateo Mountains, 1 (BS). _Chihuahua_:
Sierra Madre, near Guadalupe y Calvo, 3 (BS).
_E. d. utahensis_: Wyoming: _Sweetwater Co._: W side Green
River, 1 mi. N Utah Border, 1. Colorado: _Moffat Co._: Escalante
Hills, 20 mi. SE Ladore, 1 (BS). Arizona: _Coconino Co._: Ryan,
1 (BS).
#Eutamias merriami# (J. A. Allen)