ALLEN: MAMMALIA. 231 
identical. Thomas (1911) mentions a specimen from 40 miles north of Kaichow, 
southern Kansu. 
ScrUROTAMIAS DAVIDANUS CONSOBRINUS (Milne Edwards). 
Sciurotamias owstoni J. A. ALLEN, Bull. Amer. mus. nat. hist., 1909, 26, p. 428. 
In western Hupeh, and doubtless through northern Szechwan and into 
Shensi this darker, reddish-backed race of David’s Squirrel is found. Four 
specimens of our series from Chiliping, Fongshan, Moshuiping, and Hsienshan- 
hsien are certainly representative of this subspecies, and are identical with S. 
owstoni from Shensi. Thomas (1911, p. 169) has recently recorded other speci- 
mens from Omeishan and from 23 miles south of Tachienlu. There is much 
variation in the extent of the median white area on the throat. It is apparently 
lacking or practically so in one of the specimens from Hsienshanhsien, but in 
the other covers nearly the whole throat. In two others it is more restricted, 
and appears in one as a narrow median streak. In the series of six specimens 
of ‘‘owstoni,” two have this white patch well marked, while in the type and one 
or perhaps two of the others it is represented by a mere fleck. 
SCIUROTAMIAS DAVIDANUS THAYERI, subsp. nov. 
Type:— Skin No. 8008 M. C. Z., male adult, from Washan, western 
Szechwan, China, at an altitude of 6,000 feet. May 17, 1908, Walter R. Zappey. 
General Characters:— Similar to S. d. consobrinus, but much richer and darker 
colored throughout, feet blackish, ears (in the type) nearly without white 
postauricular patches; pelage very long and full. 
Color:— Sides of the throat, cheeks, muzzle, and upper surface of head as 
far as a line joining the bases of the ears a rich orange-ochraceous, nearly clear 
at the sides of the throat and nose, but elsewhere mixed with a nearly equal 
amount of black. An indistinct black stripe from below the eye to below the 
ear; a sharply defined buff eye-ring. External surfaces of the ears seal-brown, 
the postauricular white patches so restricted as to be unnoticeable. The upper 
surface of the body is a finely grizzled mixture of black and orange-ochraceous 
in which the black so predominates as to produce a very much darker color than 
in the previous subspecies, and in the back there is a practical absence of the 
reddish tone, though the shoulders are ticked with a slightly paler shade of 
ochraceous which tends to be more conspicuous in a longitudinal line from 
behind each ear producing a short and very ill-defined stripe. The hands and 
