46 



NOETH AMERICAN FAUNA. 



[No. 37. 



head and face blackisli brown, with an irregular white patch in front 

 of eyes; sides of head mixed brown and buffy white; sides of neck 

 with a small area of ochraceous-buff; legs and feet hazel; tail above, 

 dark clove brown, tipped with hazel; beneath, blackish brown; under- 

 parts hazel or ochraceous-tawny, the bases of hairs blackish brown; 

 sides of nose, hps, and chin, white. 



SlcuU} — Similar to that of avara but audital bullae averaging 

 larger and more inflated. 



Measurements. — Adult female topotype: Total length, 525; tail 

 vertebrae, 1 1 0 ; ^ hind foot, 75 . Adult female f rom Parawan Mountains, 

 Utah: 554; 154; 68. Immature female topotypes:^ 485-535 (average 

 507); 139-163 (151); 71-77 (73). SluU: Adult female:* Condylo- 

 basal length, 76.8-80 (78.4); palatal length, 43.5-46.1 (44.8); post- 

 palatal length, 29.5-30.7 (30.1); length of nasals, 31-34.6 (32.8); 

 zygomatic breadth, 52.3-54 (53); breadth across mastoids, 36.5-37.7 

 (37.2) ; least interorbital breadth, 16.3-18 (17.1) ; breadth of rostrum, 

 17.8-18 (17.9); maxillary tooth row, 18.8-19 (18.9). 



Remarks. — This race is an intermediate form cormQctrng jiaviventris 

 and nosofhora, darker beneath than the former but not so reddish as 

 the latter and lacking also its buffy mantle. It is about the size of 

 avara with a somewhat shorter tail, but much darker in color. A 

 specimen from Parawan Mountains, Utah, is paler beneath than the 

 type and topotypes, the underparts (except throat) and hind feet 

 being ochraceous-buff varied with brownish. An immature specimen 

 from Midvale, Idaho, provisionally referred to this form, agrees with 

 it in color, except that the underfur on the shoulders is paler (light 

 buff), and in skuU characters so far as they can be determined. 



Specimens examined. — Total number, 12, as follows: 



Idaho: Midvale, 1. 



Utah: Beaver Mountains, 6;^ Parawan Mountains, 5. 



MARMOTA FLAVIVENTRIS NOSOPHORA Howell. 

 Golden-Mantled Marmot. 

 (PI. I; PI. VIII, fig. 1; PI. XIV, fig. 1.) 

 Marmotaflaviventernosophora'H.owell, Proc. Biol. Soc. Washington, XXVII, 1914, p. 15, 



Type locality. — Willow Creek, 7 miles east of CorvaUis, Mont, 

 (altitude 4,000 feet). 



Distribution. — Rocky Mountain region of Montana, Idaho, and 

 Wyoming, from Flathead Lake, Mont., south to the Wasatch Moun- 

 tains, Utah, and east to the Bighorn Mountains, Wyo.; altitudinal 

 range from about 3,000 to 11,800 feet. 



1 No adult males examined. 



2 Apparently abnormally short. 

 « Three specimens. 



< Three specimens from Beaver and Parawan Ranges, Utah. 

 6 Including type in collection Amer. Mus. Nat.Hist. 



