1875.] Western Tibet and Eastern Turkestan. Ill 



riaribus nigris, inferioribus albis. Long, tota circa 9, cranii 225, auris 1, 

 tarsi 1*5 poll. 



Sab. — Ladak. 



This is the common species of northern and north-eastern Ladak but 

 not apparently of the mountains bordering the Kashmir valley. It is easily 

 recognized by its peculiar pale fawn colour, more rufous in summer. It was 

 first described some years ago by Dr. Stoliczka, who referred it to L. Cur- 

 %onice. I had occasion subsequently to shew that the true L. Ourzonice of 

 Hodgson is a different species, and I have just heard from Dr. Gtinther, 

 whilst this paper is passing through the press, that he has named the 

 present form Ladacensis : I have consequently withdrawn the name I had 

 proposed to give it. It is allied to L. ogotona by the form of the skull. 



32. L. AURiTUS, sp. nov. 



L. superne sordide fulvus fusco-lavatus, capite humerisque rnfescentibus , 

 auribus magnis rotundatis, pilis isabellinis indutis, vellere molli, pilis 

 basin versus nigrescenti-plumbeis, apices versus in dorso laleribusque isabel- 

 linis, fusco-terminatis, subtus albis. Long, (in corio dessicato) tota circiter 

 7'5, cranii 1-8, auris 1, tarsi 1'2 poll. 



Sab. — Pangong lake, Ladak. 



A larger form than L. Moylei with much larger ears. The colour 

 in two skins from Lukung on the Pangong lake is smokey brown. The ears 

 are as large as in the last species and must in the living animal be nearly 

 1| inches across. 



33. L. GEiSEUS, sp. nov. 



L. sordide griseus, subtus albus, ad dorsum frontemque leviter rufescenti- 

 lavatus, vellere elongato, molli, ad basin plumbeo-nigro, apices versus in dorso 

 lateribusque griseo, apicibus ipsis nonnullis fuscis ; auribus maqnis rotun- 

 datis, pilis sparsis albidis indutis. Long, in exemplo nuper occiso 7, capitis 

 115, auris 1*4, tarsi 1*3 poll. 



Sab. — Kuenluen range South of Sanju Pass. 



I know of no other Lagomys which approaches this in colour. It is a 

 peculiar grey, almost the colour of Chinchilla. The skulls of the last and 

 present species approach in character to those of L. Boylei and L. rufescens 

 but still exhibit well-marked differences. 



34. Lagomys maceotis ? Gunther, 1. c. — Kuenluen range ? 

 The above is a wonderfully rich series of Leporidce. 



