referred to Crlcetulus pliseus and campbelli. 455 



C. migratorius fulvus, Blauf. 



Type-locality. Kash^ar. 



Kange between 35° and 41° N., 74° and 80° E., so far as 

 our specimens show, but probably extending considerably 

 further, especially towards the east. 



Like C. in. griseiventris in all respects except that the 

 general colour is a little paler ; the white of the under 

 surface passes higher up ou the sides, and is less modified by 

 slaty bases, which are only present, and then very incon- 

 spicuously, on the centre of the belly. 



Mr. Holmes -Tarn collected some specimens of this beauti- 

 ful little Hamster on the Karakash River, Chinese Turkestan, 

 and Mr. Carruthers an example on the north side of the 

 Karakoram Mts. The original s|)ecinieus were obtained 

 during the Yarkand Mission, and tlie type is in Calcutta. 



Subspecies fulvus and griseiventris are no doubt very 

 closely allied, but may apparently be distinguished by the 

 darker colour and greater amount of slaty on the belly of 

 the latter. 



In the nearly or quite pure white heWy fulvus agrees with 

 the typical arenarhis of much further north, though the two 

 appear to be separated by the range oi' g7'iseive?itris. Speci- 

 mens from many further localities will be needed before the 

 exact relations of the three can be determined. 



Although I provisionally accept Dr. Satunin's view as to 

 the Central Asian Hamsters belonging to the same species 

 as C. migratorius, I think it not improbable that they really 

 ought to be divided into tw^o species — a small-toothed one, 

 of which migratorius and vemula, and perhaps arefiarius, 

 would be sul^pecies ; and a large-toothed Asiatic one, con- 

 sisting of the suhsi^ecies fulvus and griseiventris. 



But the following animal must in any case be distin- 

 guished as a species : — 



Cricelulus alticola, sp. n. 



General characters and colour above about as in C. m. 

 fulvus, but the hairs of the under surface broadly slaty at 

 base, even on chest and throat, those of the chin beiug alone 

 white to their roots. Ears grey, not darkened on the pro- 

 ectote. Tail lieavily haired, wholly white. 



Skull distinguished from that of all forms of C. migra- 

 torius by its conspicuously smaller bullae, small both verti- 

 cally and horizontally. Palatal foramina comparatively 

 long, parallel-sided. 



