44 



NORTH AMERICAN FAUNA. 



[No. 37. 



characterize this southern race. The available specimens, however, 

 show a decided reduction in size of skull southward, the small form 

 apparently being confined to the high Sierra south of Mono Lake. 

 Intergradation with flaviventris occurs in the region between Mono 

 Lake and Lake Tahoe, and with parvula in the White Mountains, 

 on the boundary between California and Nevada. 

 Specimens examined. — Total number, 47, as follows: 



California; Big Meadows, Tulare Comity, 3; Bishop Creek (altitude, 8,000 

 feet), 2; Cannell Meadows, Tulare County, 2;^ Cottonwood Lakes, Inyo 

 County, 3;^ Independence Lake, 1;^ Kaweah River (East Fork), 3; Lake 

 Tenaya, 1; Menache Meadows (near Olancha Peak), 1; Mount Lyell, 1; 

 Moimt 'W'Tiitney, 9; Mulkey Meadows (15 miles south of Mount Whitney), 

 1; Owens River (near Mammoth Pass), 1; Round Valley (12 miles south 

 of Mount Whitney), 2; San Joaquin River (near head), 4; Siberian Outpost, 

 Tulare Coimty, 1;^ Tuolumne Meadows, 10; T\Tiitney Creek, Tulare County, 

 l;i WTiitney Meadow, Tulare County, 1.^ 



MARMOTA FLAVIVENTRIS PARVULA Howell. 

 Nevada Marmot. , 

 (PI. VII, fig. 2; PI. XIII, fig. 2.) 

 Marmotaflaviventer parvula Howell, Proc. Biol. Soc. Washington, XXVII, 1914, p. 14. 



Type locality. — ^Jefferson, Toquima Range, Nje County, Nev, 

 (about 10 miles north of Belmont). 



Distribution. — Toyabe and Toquima Ranges, Nev.; and White 

 Mountains, Cal. (occurring from about 7,800 to 10,000 feet altitude); 

 probably occupies also other desert ranges in central Nevada. 



Characters. — Similar to avara, but smaller and colors darker; in 

 color resembling sierrae, but upperparts less reddish and overlaid with a 

 buffy mantle; slmll smaller than that of avara, with narrower rostrum. 



Color. — ^Underfur of upperparts slaty fuscous at base, succeeded 

 by a broad area of cartridge buff on fore back and by light vinaceous- 

 cinnamon on hinder back; long hairs dark brown sub terminally, 

 tipped on fore back with warm buff and on hinder back with white; 

 top of head and face dark vandyke brown; a band of buff or buffy 

 white across face in front of eyes; sides of nose and lips and a large 

 patch on chin white varied with buff; sides of neck with a conspicu- 

 ous patch of warm buff or cinnamon-buff; underparts ochraceous- 

 tawny, shading to russet on abdomen and throat; fore legs tawny or 

 russet, tipped with ochraceous-buff; fore and hind feet varying from 

 light pinldsh cinnamon to russet; tail above, dark chestnut-brown 

 varied with tawny and grizzled with buff; beneath, blackish brown. 



SJcuU. — Similar to that of avara, but decidedly smaller, with 

 rostrum narrowed anteriorly. 



1 Collection Mus, Vert. Zool., Univ. of California. 



