_Range._--Low valleys of west-central Utah in Tooele, Juab and Millard counties; marginal occurrences are: all in Utah, 18 mi. SW Orr's Ranch, 7 mi. S Fish Springs, Hinckley and Lynndyl. _Diagnosis._--Size medium (see measurements). Color light, entire dorsal surface Light Pinkish Cinnamon, purest on sides and flanks, with but slight suffusion of black on upper parts; cheeks white; arietiform markings, pinnae of ears, plantar surfaces of hind feet, dorsal and ventral stripes of tail, brownish. Skull large; auditory bullae long, wide and well inflated; external auditory meatus elongate with a notch on the dorsal border; nasals long and flaring distally. _Comparisons._--From _Dipodomys ordii celeripes_, _D. o. pallidus_ differs in: Size larger; color generally darker, although some specimens are lighter; skull larger; nasals longer and more flared distally; interorbital width greater; auditory bullae larger; external auditory meatus larger. From _Dipodomys ordii fetosus_, _D. o. pallidus_ differs in: Size larger; color lighter; ventral stripe of tail indistinct as opposed to pronounced; skull larger; nasals longer and more flared distally; auditory bullae larger; external auditory meatus larger; palate shorter and broader. For comparisons with _Dipodomys ordii marshalli_ and _Dipodomys ordii utahensis_ see accounts of those subspecies. _Remarks._--Among named subspecies of _Dipodomys ordii_, _D. o. pallidus_ most closely resembles, morphologically, _D. a. marshalli_, its nearest geographic neighbor to the north and east. Intergradation with _Dipodomys ordii utahensis_ is noted in color and intermediacy of body size of specimens from Clover Creek. The majority of cranial characters, however, show these animals to be referable to _D. o. utahensis_ rather than to _D. o. pallidus_. Specimens taken at Lynndyl and Hinckley show intergradation in size of body, length and configuration of the nasals and the degree of inflation of the auditory bullae between _Dipodomys ordii celeripes_ and _D. o. pallidus_. The majority of characters studied show these latter animals to be referable to _D. o. pallidus_. Specimens from 35 and 60 miles west of Delta, in size of body and shape and inflation of the auditory bullae, are intermediate between _D. o. pallidus_ and _D. o. celeripes_. These specimens are here referred to _D. o. celeripes_. _Specimens examined._--Total, 34, all from Utah, distributed as follows: _Tooele County_: Old Lincoln Highway, 18 mi. SW Orr's Ranch in Skull Valley, 4400 ft., 9 (UU). _Juab County_: Fish Springs, 4400 ft., 4 (UU); 7 mi. S Fish Springs, 4400 ft., 4 (UU). _Millard County_: 1 mi. N Lynndyl, 4768 ft., 5 (UU); Lynndyl, 4768 ft., 1 (UU); Hinckley, 4600 ft., 11 (UU). =Dipodomys ordii nexilis= Goldman _Dipodomys ordii nexilis_ Goldman, Journ. Washington, Acad. Sci., 23:470, October 5, 1933.