1915.] 



MAEMOTA FLAVIVENTKIS GROUP. 



43 



MARMOTA FLAVIVENTRIS SIERRAE subsp. nov. 

 Southern Sierra Marmot. 

 (PI. IV, fig. 4.) 



Tyfe from head of Kern River, Mount Whitney, Cal. (altitude, 

 9,300 feet). Adult $ , No. fffH, U. S. Nat. Mus., Biological Survey 

 collection. Collected Sept. 3, 1891, by Vernon Bailey; original 

 number, 3242. 



Distribution. — Higher parts of the southern Sierra Nevada from 

 upper Kern River north to vicinity of Mono Lake. 



CTiaracters. — Similar to Jlaviventris, but colors redder and buffy 

 mantle reduced or obsolete; skull smaller. 



Color. — General tone of upperparts vinaceous-cinnamon to mikado 

 brown, narrowly grizzled with white; underfur at base pale bister 

 succeeded by pale pinkish buff, shading at tips into vinaceous- 

 cinnamon and on hinder back to orange-cinnamon or mikado brown; 

 long hairs chestnut-brown or blackish brown subterminally, tipped 

 with white or buffy white; top of head and face dark cinnamon- 

 drab to clove brown, with a rather large patch of white in front of 

 eyes; sides of neck warm buff; fore legs and feet hazel varied with 

 light ochraceous-buff ; hind feet similar, or sometimes light buff, varied 

 with brown; tail hazel, the bases of hairs light bister; underparts 

 hght ochraceous-buff, much mixed on sides and belly and bordered 

 on throat with mikado brown. 



Slcull. — Similar to that oi Jlaviventris, but decidedly smaller; very 

 similar to that of avara but averaging slightly larger, and nasals longer. 



Measurements. — ^Adult male topotype: Total length, 600; tail 

 vertebrae, 200; hind foot, 83. Adult male: ^ 600; 165; 80. Adult 

 female: 2 555-645 (average 593); 167-186 (176); 75-80 (77). Slcull: 

 Adult male: ^ Condylo-basal length, 79.1-85.5 (average 84.7); 

 palatal length, 44-50.5 (47.7); postpalatal length, 30.8-35 (33); 

 length of nasals, 32.6-39 (36.3); zygomatic breadth, 52-58.3 (55.8); 

 breadth across mastoids, 37.5-43.6 (40.8); least interorbital breadth, 

 17-20.3 (18.1); breadth of rostrum, 17-20 (18.6); maxillary tooth 

 row, 20.2-20.7 (20.4). Adult female: ^ Condylo-basal length, 77.1- 

 83.2 (80.1); palatal length, 43.2-47.2 (45.5); postpalatal length, 28.7- 

 32.2 (30.5); length of nasals, 30.7-36.5 (34.2); zygomatic breadth, 

 51.4-55.4 (53.6); breadth across mastoids, 37-40 (38.4); least inter- 

 orbital breadth, 15-18.7 (17.2); breadth of rostrum, 17.4-20.2 (18.4); 

 maxillary tooth row, 19-20.2 (19.7). 



Remarlcs. — ^By reason of the scarcity of specimens from the Cas- 

 cades (the type region oi jlaviventris) it is impossible satisfactorily to 



1 One specimen from East Fork Kaweah River, Cal. 

 « Five specimens from soutliern Sierra Nevada, Cal. 

 « Six specimens from southern Sierra Nevada, Cal. 



