re/errec? /o Cricetul us pliaeus an J cam pbelli. 455 



C migratorius fulvus, Blanf. 



Type-locality. Kashgar. 



Range 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 m. griseiventris in all respects except that tlie 

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

 surface passes higher up on 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 specimens were obtained 

 during the Yarkand Mission, and the 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 belly fulvus agrees with 

 ttie typical arenarius of much further north, though the two 

 appear to be separated by the range o^ gi'iseiventris. 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 A.siun Hamsters belonging to the same species 

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

 ought to be divided into two species — a small-toothed one, 

 of which migratorius and vernula, and perhaps arenarius, 

 would be subspecies ; and a large-toothed Asiatic one, con- 

 sisting of the subspecies /?</y?/ J? a,nd griseivefitris. 



But the following animal must in any case be distin- 

 guished as a species : — 



Cricetulus 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 being alone 

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

 ectote. Tail heavily haired, Avholly white. 



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

 torins by its conspicuously smaller bullse, small both verti- 

 cally and horizontally. Palatal foramina comparatively 

 long, parallel-sided. 



