MARMOTA. 37 



Marmota flaviventer warreni Howell. 



Marmota flaviventer warreni Howell, Proc. Biol. Soc. Wash., XXVII y 

 1914, p. 16. 



Type locality. Crested Butte, Colorado. 



Geogr. Distr. Western Colorado, limits of range unknown. 



Gent. Char. Size large; color deep red; skull large, rostrum long, 

 slender. 



Color. Head chestnut-red; upper parts reddish, hairs white- 

 tipped; arms above and beneath, and underparts tawny-ochraceous ; 

 underpart of thighs ochraceous-buff; hands chestnut, feet dark red; 

 tail above tawny-red, beneath chestnut. Ex type in United States 

 National Museum. 



Measurements. Total length, 565; tail, 131; hind foot, 82. 

 Skull: Occipito-nasal length, 90.5; Hensel, 79; zygomatic width, 59; 

 intertemporal width, 16.5; length of nasals, 38.5; length of mandible, 

 58; length of lower molar series, 19.5. Ex type in United States 

 National Museum. 



Marmota flaviventer obscura Howell. 



Mar mota flaviventer obscura Howell, Proc. Biol. Soc. Wash., XXVII, 

 1914, p. 16. 



Type locality. Wheeler Peak, 5 miles south of Twining, New Mex- 

 ico. Altitude, 11,300 feet. 



Geogr. Distr. Upper slopes above timber line of the high peaks in 

 northern New Mexico and southern Colorado, from the Pecos River 

 Mountains north to the Sangre de Christo and San Juan Ranges, 

 Colorado. 



Genl. Char. Size large; tail long; colors dark; skull like that of 

 M. dacota but the palatal foramina are narrower. 



Color. Head and nape dark chestnut; upperparts chestnut-brown, 

 hairs white-tipped; base of hairs black followed by buff; lips and 

 chin white; underparts, sides of chest and belly like upperparts but 

 darker ; middle of chest and abdomen buff y ; hands and feet blackish 

 chestnut; tail above dark ochraceous-buff, beneath black in center 

 margined by dark ochracoeus-buff . Ex type in United States National 

 Museum. , 



Measurements. Total length, "average of three, 655; tail, 204; 

 hind foot, 90.7. Skull: Occipito-nasal length, 83.9; Hensel, 72.8; 

 zygomatic width, 59.4; intertemporal width, 16.3; length of nasals, 

 34.2; length of upper molar series, 20; length of mandible, 57.7; 

 length of lower molar series, 18.7; Ex type in United States National 

 Museum. 



