1S75.] Western Tibet and Eastern Turkestan. 107 



ginescente, caudd tertiam partem corporis capitisque cequante, fulvd, nigra 

 breiiter terminatd ; pilis elongatis corporis omnibus ad basin fuscis. Long. 

 a rostro ad basin caudce circiter 18 (in corio dessiecato), caudce vertebrarum 

 6, palmce 2, plantce fere 3, cranii 3'7 poll. 



Sab. — Kaskasu pass between Yarkand and Sarikol, east of the Pamir. 



This is a much smaller species than A. caudatus, which it resembles 

 somewhat in colour, but it is never apparently so ferruginous beneath, nor 

 so black above as are some specimens of the Kashmir marmot. The tail in 

 A. aureus too is rather shorter in proportion. It appears to resemble A. 

 Semaclialanus (Hodgson nee Anderson) but to be larger and different in 

 colour. The skull shews distinctions from all these forms. 



16. Aevtcola Blythi. 



Phawmys leucurus, Blyth, J. A. S. B. 1863, XXXII, p. 89 (nee Arvieola leucurus, 

 Gerbe). 



Arvieola fuscescenti-fulvus subtus isabellinus, caudd fulvd, quartam 

 partem totius longitudinis subcequante vel excedente, auribus rotundatis me- 

 diocribus, sparsim pilosis, palmis pentadactylis, ungue pollicari parvo obtuso, 

 dentibus molariis similibus Us A. mandarini,TOoZarw ultimo maxillari postice 

 magis producto, angulo interno postico ejusdem acutiore, dente anteriore 

 mandibulars antice angulo fortiore interno munito. Long, sine caudd 4 — 4*5, 

 caudce 1*25 — 1*35, cranii 1, auris 0'4, plantce 0'8 poll. 



Sab. — Ladak. 



The genus Phaiomys of Blyth cannot, I think, be separated from Arvieola, 

 as the only character of any importance, the presence of a claw on the rudi- 

 mentary thumb of the forefoot, is found in many Arvicolce, the common 

 water rat, A. ampliibius, amongst others. The name A. leucurus is objec- 

 tionable in the present case as the species has not a white tail, and the same 

 specific term had been previously applied by Gerbe to a vole inhabiting 

 the French Alps, but considered by Blasius identical with A. nivalis. 



17. Aeyicola Stoliczkantjs, sp. nov. 



A. supra Icete fusco-rufescens, sive sor elide ferrugineus, subtus albus ; 

 vellere niolli, longiusculo, ad basin scliistaceo, palmis tetradactylis, plantis 

 pentadactylis nudis brevibus, tarsis subtus pilis indutis, auriculis parvis e 

 vellere Tiaud emergentibus, rotundatis, caudd quintam partem totius longi- 

 tudinis subcequante, pilis fulvescenti-albidis setosis instructd ; dente molario 

 maxillari ultimo angusto, intus angulis duobus fortioribus antice, nullis 

 postice, extus quatuor parvulis, duobus antice, ceteris postice, spatio inter- 

 veniente, munito. Long, a rostro ad basin caudce [in corio dessicato) 4<, caudce 

 1, tarsi 07 poll. 



Sab. — Nubra valley, Ladak ; Aktagh near Karakoram Pass. 



