272 Dr.J.E.Gray’s Synopsis of the Asiatic Squirrels 
and closely longitudinally grooved. The limbs free; feet large, 
strong. ‘Tail as long as the body and head, very thick, clavate, 
covered with long flaccid hairs. 
The grooving of the teeth is a peculiarity not observed in any 
other Sciuride. 
Rheithrosciurus macrotis. 
Sciurus macrotis, Gray, P. Z. 8S. 1856, p. 341, t. 46. 
Brown, very minutely punctulated ; throat and beneath white; 
lateral streaks broad, yellowish; front of thighs bay. Tail 
blackish, whitish-washed. 
Hab. Sarawak (Wallace). Type in B.M. 
11. The front edge of the cutting-teeth narrow, compressed, smooth. 
2. Scrurws: 
Head moderate, short, rounded; ears ovate, covered exter- - 
nally with elongated hairs forming a tuft or pencil; front edge 
of the cutting-teeth narrow, compressed, smooth. Limbs free. 
Tail as long as or longer than the body, covered with long hair 
spreading on the sides. 
I. The ears with a tuft of elongated rigid hairs forming a trans- 
verse pencil. No. 1. 
Il. The ears with rather rigid hairs forming a fringe and slight 
pencil. Nos. 2-4. 
Ill. The ears with a puff or tuft of soft hairs on the outer sur- 
face. Nos. 5-9. 
I. Ears with a tuft of long hairs forming a pencil ; tail broad, as long 
as the body; medium-sized. 
1. Sciurus calotus. 
Mustela? calotus, or Chuakhal, Hodgson, Caleutta J. N. H. ii. 221, t. 9. 
Mustela calotis, Hodgson. 
Sciurus europeus, var. Gray, List. Hodgs. Coll. 23. 
Fur very soft, black-grey, beneath white; tuft of ears and 
tail darker. 
Hab. North China, Thibet (Mr. Hodgson’s type), Siberia. 
B.M. 
This may be the same as the Grey Squirrel of Northern Eu- 
rope; but it is smaller and the fur softer than any S. vulgaris I 
have seen. 
II. The ears covered externally with elongated hairs forming a fringe 
and slight pencil ; medium-sized. 
2. Sciurus leucomus, Sol. Miiller, Verh. N. B. 10. 
Dark grey, grizzled with black and white; beneath reddish 
grey, white half collar on the back of the neck. Tail as long 
