302 MR. R. I. POCOCK ON PALLAs's CAT. [Apr. 9, 



There was no marked seasonal change in colour, the coat 

 merely becoming thicker in winter than in summer. 



Satunin has recently made Felis manul the type of a new 

 genus, Trichcelurus (Ann. Mus. St. Petersb. ix, pp. 495-506, 

 1905), being the first to point out in detail the structural 

 peculiarities of the species. Unfortunately he overlooked the 

 fact that Severtzow had already proposed the name Olocolohus for 

 the same species (Rev, Mag. Zool. x. p. 386, 1858). 



To Satunin also belongs the credit of showing that three 

 distinct forms of Manul are recognisable, each typical of a par- 

 ticular geographical area. To two of these he gives subspecific 

 and to one specific rank. 



Substituting Otocolohus for Trichcelurus, his classification is as 

 follows : — 



1 a. Otocolohus mamcl Pall, (typical form), from Trans- 

 caspia, Tvirkestan, and Siberia to the west of Lake 

 Baikal. 

 b. Otocolohus manul mongolicus Sat., from Mongolia and 

 Siberia to the east of Lake Baikal. 



2. Otocolohus nigripectus Hodgs., Tibet. 



I have not seen skins of the typical or of the Mongolian forms, 

 but, judging from Satunin's description and the published figures, 

 I should say that the differences between them and the Tibetan 

 form are only of subspecific value. The name for the latter 

 therefore will be Otocolohus manul nigripectus. 



The Society's specimen of this subspecies presented the following 

 characters : — 



Prevailing colour of face grey : some bufi" below and at the 

 sides of the nose : the eyes surrounded by a greyish-white area 

 which is bordered by a black streak above and below and partially 

 on the inner side, giving a characteristic spectacled look to the 

 face. The buff" area round the nose set off" by a black patch, 

 whence arise some black moustachial bristles ; the rest of these 

 bristles mostly white and arising from blackish lines on the 

 whitish area of the upper lips. Some black spots running into 

 abbreviated lines on the cheek below the eyes. The two genal 

 stripes broad and jet-black, descending obliquely downwards and 

 backwards, the inferior arising from a spot on a level with the 

 middle of the eye, the superior from a point near the outer canthus 

 of the eye ; area above the latter stripe grey, below the former 

 pale grey turning to white posterioi-ly ; the area between them 

 pale greyish white. Posteriorly the two stripes are confluent, 

 and merge below the ear with the sooty-brown hue of the throat 

 and chest. The dark hue of these areas relieved by the long 

 white tips to the hairs. Summit of head black speckled with 

 white ; its fore part or the area in front of the ears marked with 

 some small asymmetrically disposed jet-black spots interspersed 

 with a few greyish-white spots. Back of ears greyish, passing 



