118 Mr: R. I. Pocock on the 



F. ocreata from Somaliland differs from that of an example 

 of F. sylvcstris from Scotland in having the area between 

 the nostrils and the angular portion immediately below it 

 rather narrower (fig. 2, A, B, C). 



The lynxes {F. caracal, F. rvffus esquinapce, and F. lynx 

 isabeUinus) have the rhinarium relatively larger and more 

 prominent than F. sylvcstris and F. ocreata^ the luiked portion 

 seen from above being less overgrown by the hair of the 

 muzzle. Otherwise there is no great difference between 

 them. In an example of F. lynx isabeUinus the upper margin 

 seen from the front is more convex than in F. caracal and in 

 F. rvffus esqubiapa, and the nostrils are somewhat larger, 

 possibly in adaptation to a life at high altitudes, where the 

 atmosphere is more rarified (fig. 4, C). 



In tlie suialier tropical and subtropical Felidse of America 

 the rhinarium is lai'ge as compared with that of i^. ocreata 

 and sylvcstris, as may be seen by comparing the drawings of 

 this organ in a specimen of F. ocreata from Somaliland and 

 of F. salinarum from Cordova in the Argentine, the cats 

 themselves being approximately equal in size. In the case 

 of F. salinarum^ the rhinarium exhibits a naked area of 

 considerable size when seen from above, the nostrils are 

 wider apart than in F. ocreata, and the infranarial portion 

 is wider transverselv and much less acutely angled inferiorly 

 (fig. 2, B, C, &G, il, I). 



In F. ivieclii the rhinarium is very similar to that of 

 F. salinarum. 



In an examj^le of F. parclalis (fig. 3, A, B, C) from Maiiaos 

 the rhinarium is rather more prominent than in examples of 

 F. iviedii examined, and has the internarial septum wider, the 

 edge more convex in profile view^ and the upper edge also 

 more convex when viewed from the front. Nevertheless, the 

 general similarity between them is unmistakable. 



In an adult F. jaguaroncli (fig. 3, D, E, F) from Cordova, 

 in the Argentine, the muzzle projects, and the hairs on its 

 summit form a high crest, which anteriorly encroaches in 

 the middle line on the rhinarium, forming an angular pro- 

 jection over the middle of its upper side. In profile view 

 the margin is convex. From the front A'iew the upper edge 

 is mtsially notched by the hairy crest, the internarial septum 

 is broad, and the portion below the nostrils deep. But in a 

 young specimen of the typically-coloured form of this species 



* This form, described by Mr. Thomas (Ann. & Mag. Nat. Hist. (7) 

 xii. p. 239, 190.3), is clcseiy related to the better-liiiown F. geoffroyi. 

 Possibly it should be regarded merely as a subspecies. 



