306 MR. R. I. POCOCK ON PALLAS's CAT. [Apr. 9, 



Some of the principal differences not shown in the above-given 

 measurements may be described as follows : — 



a. Upper carnassial withovit inner lobe ; no maxillary excres- 



cence bounding the infraorbital foramen above and out- 

 side ; malar sending up a long narrow process in front of 

 and considerably above the laciymal foramen ; infero- 

 anterior edge of orbit circularly I'ounded ; upper edge of 

 orbit elevated, higher than median portion of frontal bone ; 

 facial portion of skull abruptly inclined ; occipital crest 

 small ; interparietal and parietal crests absent ; temporal 

 crests marked by two shallow grooves neai-ly evenly 

 converging from the postorbital processes to the inter- 

 parietal ; the smooth median and rougher lateral (tem- 

 poral) area of the joarietals slightly elevated and separated 

 by a shallow depression ; fronto-parietal suture strongly 

 angled behind the postorbital processes and procurved 

 (concave forwards) dorsally ; basisphenoid longitudinally 

 arched inaind. 



b. Upper carnassial with strong inner lobe ; a distinct excres- 



cence on the maxilla bounding the infraorbital foramen 

 above and externally ; upper process of malai- not extending 

 past the lacrymal foramen ; infero-anterior edge of orbit 

 more ovally rounded ; upper edge of orbit depressed, lowei' 

 than median portion of frontal bone ; facial portion of 

 skull evenly curved downwards from the frontal to the 

 middle of the nasals ; occipital and interparietal crests 

 well -developed ; temporal crests, when not mesially con- 

 fluent, represented by a low ridge defining a median lyrate 

 area forming a practically continuous curve with the 

 temporal portion of the parietal bone ; fronto-parietal 

 suture forming a nearly straight transverse line ; basi- 

 sphenoid nearly flat, only lightly arched longitudinally. 



sylvestris and ocreata. 



The skulls of two Tibetan specimens that I have seen do not 

 agree with Milne-Edwards's statement that the nasals in Mongolian 

 specimens are strongly compressed in their posterior and corre- 

 spondingly dilated in their anterior poi-tion. Satunin also states 

 that the nasals in the Tibet Manul [F. nigripecttts) differ from 

 those of the typical form in being constricted in the middle and 

 distally expanded. In the skull of the animal in the Society's 

 Collection, the constriction is very slight, amounting to only 1 mm. 

 in transverse width across the two bones. From this constriction 

 the bones expand very gi-adually forwards and backwards. They 

 may be described as being of the broad type, such as is shown in 

 F. sylvestris. 



The infraorbital foramen is small and vertically oval, its 

 greatest length being less than the distance between its upper 

 extremity and the superjacent edge of the orbit. 



