230 SOME CHINESE VERTEBRATES. 
43 (41); palatal length, 25 (23.8); nasals, 17 (14.3); zygomatic breadth, 27 
(27); mastoid breadth, 20.3 (20); interorbital constriction, 14 (13.8); greatest 
breadth outside m*, 12 (11); upper diastema, 12 (12); mandible from condyle 
to tip of incisor, 36 (35); upper molar row (excluding p*), 9 (9); lower molar 
row, 9.3 (8.7). 
Remarks:— Apart from its greater size and differently colored tail, the 
most striking characteristic of this squirrel is the white postauricular patch. 
In our series of D. pernyi from Szechwan, as well as in Milne Edwards’s plate 
(Rev. mag. zool., 1867, ser. 2, 19, pl. 19) and description, the bright ochraceous 
buff of these patches is a marked feature. 
ScIUROTAMIAS DAVIDANUS (Milne Edwards). 
A series of nine squirrels of this curious genus proves to be of considerable 
interest. Milne Edwards originally described Sciurus (Tamias) davidanus 
from the environs of Pekin and pointed out the peculiar cranial characters 
which seem to ally it to the chipmunks (Tamias). Through the courtesy of the 
United States National Museum, I have been loaned a topotype of this squirrel 
which agrees well in color with that described by Milne Edwards. In his re- 
marks under the head of ‘‘ Sctwrus pernyi,” this author (Recherches, p. 304-305) 
briefly describes, “‘Sciwrus consobrinus”’ which he contrasts with the first-named 
species, stating that in cranial characters it is almost exactly the same as S. 
davidanus and evidently of the same “‘type spécifique.”’ This squirrel came from 
the principality of Moupin and is said to differ from S. davidanus from Pekin 
in the possession of the reddish tones of the upper surfaces. The brief deserip- 
tion given is sufficient to indicate the characteristic differences that separate 
the uniformly grizzled pale ochraceous and black squirrel of Pekin from the 
more western highland form with the posterior part of the back darker and redder, 
in contrast to the grayer tint of the shoulders. These differences have been well 
described by Dr. J. A. Allen (1909, p. 428) who names this darker form Sciuro- 
tamias owstoni, on the basis of six specimens from Taipasiang, Shensi. Through 
the kindness of Dr. Allen I have been enabled to compare this series with our 
material from Hupeh, and there seems no doubt that the name consobrinus 
is applicable to the dark reddish-backed form of which S. owstoni therefore be- 
comes a synonym. ‘Two of our specimens from Mafuling, Hupeh, (5,000 feet) 
seem to be nearer S. davidanus than to the race consobrinus, and are here referred 
to that species. A specimen from Tanshuiya, (3,000 feet) is also practically 
