1915.] 



MAEMOTA FLAVIVENTEIS GEOUP. 



45 



Measurements. — Adult female:^ Total length, 470-500 (average, 

 480); tail vertebrae, 130-150 (141); hind foot, 70. SluU: Adult 

 female: 2 Condylo-basal length, 71.3-73 (72.2); palatal length, 

 39.4-41 (40.2); postpalatal length, 27-28.6 (27.8); length of nasals, 

 29.4-30.5 (30); zygomatic breadth, 48.6-49 (48.8); breadth across 

 mastoids, 34.2-34.3; least interorbital breadth, 15.5-15.6; breadth 

 of rostrum, 17.2-17.4 (17.3); maxillary tooth row, 17.7-18.6 (18.2). 



Remarks. — This is the smallest of the races oi jlaviventris. It most 

 resembles typic oXjiaviventris in color, but is even smaller than avara. 

 Its small size was noted in the field by Vernon Bailey, who collected 

 the type series. The range of the subspecies is not definitely known 

 but probably extends at least to the Ruby Mountains where, on top 

 of one of the peaks, Mr. Bailey found evidences of the presence of 

 marmots. 



A small series in badly worn pelage from White Mountains, Cal., is 

 provisionally referred to this race, the specimens being intermediate 

 in size between parvula and sierrae, and agreeing fairly weU in color 

 with the former, except for a stronger suffusion of red. One adult 

 female skull agrees with skuUs of parvula while a sub adult male agrees 

 equally weU with comparable specimens of sierrae. 



Two very young specimens from Mountain City, northeastern 

 Nevada, are also provisionally referred to this race. 



Specimens examined. — Total number, 16, as follows: 



Nevada: Arc Dome, Toyabe Range, 6; Jefferson, Toquima Range, 1; Mountain 

 City, 2. 



California: White Mountains (altitude 9,300-10,000 feet), 7. 



MARMOTA FLAVIVENTRIS ENGELHARDTI Allen. 

 Engelhardt Marmot. 

 (PI. VII, fig. 4; PL XIII, fig. 4.) 

 Marmota engelhardti Allen, Mus. Brooklyn Inst. Arts & Sci., Sci. BuL, 1, 1905, p. 120. 



Type locality. — Briggs [=Britt's] Meadow, Beaver Range, Utah 

 (altitude 10,000 feet). 



Distribution. — Beaver and Parawan Mountains, southern Utah; 

 also Midvale, Idaho ; exact limits of range imknown. 



Chamcters. — Similar to jlaviventris but smaller; underparts and 

 hind feet darker (redder) ; buffy patches on sides of neck less exten- 

 sive; larger than parvula, with darker feet and underfur; skull sim- 

 ilar to that of avara but bullae larger. 



Color. — General tone of upperparts Vandyke brown, grizzled with 

 buffy white; underfur fuscous at base succeeded by pinkish buff or 

 pinksh cinnamon, the latter shading on sides to Rood's brown; long 

 hairs blackish brown, tipped with Ught buff or buffy white; top of 



1 Three specimens from Toyabe and Toquima Ranges, Nev. 2 Two specimens from same localities. 



