DECEMBER, 1903. MAMMALS ELLIOT. 253 



darkest on head and rump; sides paler cream buff ; upper lip and entire 

 under parts white; feet buffy white; tail above pale brown, beneath 

 yellowish white; ear pale brown, with a buffy tuft of hair at base. 



Measurements: Total length, 130; tail vertebrae, 73; hind foot, 

 19; ear, 6.5. Skull: total length, 21.5; Hensel, 14.5; zygomatic 

 width, ii ; interorbital width, 5; mastoid width, 12; greatest width of 

 parietals, 10; length of interparietal, 2.5; length of nasals, 8.4; pala- 

 tal length, 7.5; length of upper tooth row, 4; length of mandible, 

 angle to tips of incisors, 16.5; length of lower tooth row, 3. 



This is a very beautiful little species with the rich coloring so 

 prevalent in the mammals from Keeler. It is not unlike the rich hues 

 of the species of Dipodomys from the same locality, and also of that 

 which I consider the summer pelage of P. stephensi from Death 

 Valley. This new sp*ecies must be very rare, as Mr. Heller was able 

 to procure only two examples. 



CH^ETODIPUS. 

 Perognathus hispidus maximus. Subsp. nov. 



Type locality: Noble, Oklahoma Territory. 



Gen/, char.: Similar to P. h. paradoxus, but brighter in color; 

 hind foot and other dimensions larger. Skull longer, parietals wider; 

 interparietal longer; mastoids wider. 



Color: Upper parts mixed ochraceous and black, the latter color 

 predominating; lateral line from nose to rump including shoulder and 

 upper part of fore and hind legs very bright ochraceous buff; face and 

 orbital region bright ochraceous buff, lightly lined with black; under 

 parts, hands, and feet white; tail above blackish brown, sides buff, 

 beneath white; ear buff on outside, dusky inside., 



Measurements: Total length, 243^ tail vertebrae, no; hind foot, 

 29. Average of five specimens: total length, 232; tail vertebrae, 

 109.4; hind foot, 27.8. Skull: total length, 34; Hensel, 25; zygomatic 

 width, 16.5; mastoid width, 16; length of parietal, 5; greatest width 

 of parietals, 14; length of nasals, 10.5; palatal length, 14; length of 

 upper tooth row, 5; length of mandible, angle to tip of incisors, 20; 

 length of lower tooth row, 4. 



While resembling P. h. paradoxus, the present race is easily dis- 

 tinguished from that form by its bright colors and greater size, the 

 latter indeed making it quite conspicuous when compared with its 

 nearest relatives. A series of these was obtained by Mr. Surber in 

 Oklahoma Territory, which were referred in my paper (Pub. Field 

 Columb. Mus. , 1899, I., p. 300) to P. h. paradoxus, from which it 

 seems entitled to be separated as a distinct race. 



