226 Field Columbian Museum — Zoology, Vol. III. 



ing posteriorly; palate wide between molars; occipital crest promi- 

 nent; teeth small, weak; tail short, bushy. 



Color. — September. Nose cinnamon rufous, cheeks mixed gray and 

 black; upper lip, chin and between jaws grizzled grayish white; top 

 of head grizzled black gray and fulvous; back of ears, occiput, and 

 back of neck deep buffy ochraceous, uniform; rest of upper parts 

 tawny or tawny ochraceous, with numerous white-tipped hairs inter- 

 mingled; lower part of throat white; sides of neck and collar 

 beneath throat buff, in some places creamy buff; chest, abdomen 

 and inner sides of thighs near body white; rest of under parts griz- 

 zled grayish buff, and black; shoulders pale buffy ochraceous; fore 

 and hind legs rich fulvous, feet paler, whitish on toes at base of 

 claws. Tail tawny ochraceous, white at base beneath; inner side 

 and edge of ears white. New hairs of the winter pelage coming in 

 black, with white tips. The August examples in greatly worn pelage 

 are darker tawny, with a great many white-tipped, long blackish 

 brown hairs intermingled with the rest. 



Measureme/i/s, type, female. — Total lengths, 1030; tail vertebra;, 

 275; hind foot, 173; ear, no. Skull: occipito-nasal length, 147 

 (163); total length, 169 (173); Hensel, 149 (153); zygomatic 

 width, 94 (95); interorbital constriction, 29 (30.5); width of brain 

 case above zygomata, 59 (60); across postorbital processes, 46 (46); 

 length of nasals, median, 55 (60); lateral, 63 (67); width of ros- 

 trum above last premolar, 27 (25); palatal length, 81 (^82); width of 

 palate at posterior end of carnassial, 42 (40); between last molar, 

 2 9-5 ( 2 7); palatal arch to end of hamular process of pterygoid, 30 

 (3 1.5); width of basisphenoid at anterior margin of bullae, 15 (15.5); 

 width of basioccipital at posterior line of bulla;, 14 (15); length of 

 upper carnassial, outer alveolar border, 10 (16); length from anterior 

 edge of canine to posterior margin of last molar, alveolar border, 

 71 (75); alveolar length of upper molar series, 29.5 (33); postero- 

 antero width of last molar, 5 (6); length, 9 (10.5); length of 

 mandible, angle to alveolus of outer incisor, 121 (123); height at 

 condyle, 24 (23.5); at coronoid process, 47 (50); alveolar length of 

 lower carnassial, 17 (19); length of lower molar series, 36 (42); 

 anterior margin of canine to posterior margin of last molar, alveolar 

 border, 78 (83.5). The numbers in parentheses are the measure- 

 ments of a skull of a male. 



Three examples of this species are in the summer pelage in a much 

 worn condition. The fur of the type, killed the 29th of September, 

 is long and fresh, evidently the full autumn pelage, the dark hairs 

 characteristic of the winter coat only beginning to appear at the base 



