ALLEN: MAMMALS FROM BEAVER COUNTY, UTAH. IIQ 



3. CITELLUS (AMMOSPERMOPHILUS) LEUCURUS CINNAMOMEUS 



(Merriam). 



Seven specimens, Fort Cameron, Beaver County, Utah, August 5. 

 Common. Somewhat intermediate in character between leucurus and 

 cinnamomeus, but apparently nearer the latter. 



4. CITELLUS (CALLOSPERMOPHILUS) LATERALIS (Say). 



Five specimens, mostly half-grown young, Briggs Meadows, 

 Beaver Range Mountains, Utah, altitude 11,000 feet, August 20. 

 Common, according to Mr. Engelhardt, from about 8,000 to 12,000 

 feet. 



Although the inner pair of dark dorsal stripes is obsolete, as in 

 C. (C.) lateralis wortmani, the general coloration is much darker than 

 in wortmani, being nearly as dark as in true lateralis. These specimens 

 are thus intermediates between these two forms. 



5. CITELLUS (OTOSPERMOPHILUS) GRAMMURUS (Say). 



Six specimens, vicinity of Fort Cameron, Beaver County, Utah, at 

 altitudes of 6,000 to 7,000 feet, August 5. 



Not satisfactorily distinguishable from specimens from various 

 localities in Arizona and New Mexico. 



6. CYNOMYS PARVIDENS sp nov. 



Type, No. 437, Mus. Brooklyn Inst. Arts and Sciences, Buckskin Valley, Iron 

 County, Utah, Aug. 25, 1904; George P. Englehardt. 



Apical half to two thirds of tail white, as in Cynomys leucurus Merriam, 

 from Fort Bridger, Utah, but general coloration different, and dentition much 

 weaker. 



Above dull rufous, the tips of the hairs lighter, slightly varied with dusky- 

 tipped hairs posteriorly ; thighs and fore limbs clear yellowish rufous ; below 

 strong yellowish buff, the hairs dusky basally ; proximal third of tail like ad- 

 joining parts of the body, the apical two thirds (or about) white, varying in 

 different specimens from yellowish white to clear white; top of head like back, 

 but strongly mixed with black, as are the cheeks below the eyes ; a prominent spot 

 of black above the eye. 



Skull similar in conformation to that of C. "leucurus," but with much weaker 

 dentition and rather smaller, less inflated bullae, and a slender median spine 

 on the posterior palatal border 4 mm. long, much longer than in any other 

 member of the genus. 



There are no flesh measurements, but the hind foot, in the dry skin, 

 icasures 53 mm. 



