118 Mr. R. I. Pocoek on the 



F. ocreata from Somaliland differs from that of an example 

 of F. sylvcstris from Scotland in liavine; the area between 

 the nostrils and the angular jiortion innncdiatcly below it 

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



The lynxes {F. caracal, F. ri<ffus e^qiiinapa, and F. lynx 

 isabelinius) have the rhinarinm rcdativcly larger and more 

 prominent than F. sylvcstris and F. ocreata, the naked 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 isaheltinus the npper margin 

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

 F. rxiffus esyjiinapa, and the nostrils are somewhat larger, 

 possibly in adaptation to a life at liigli altitudes, Avhere the 

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



In the smaller tropical and subtropical Felidse of America 

 the rhinarinm is large as comparcd with that of F. 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. satinarum from Cordova in the Argentine, the cats 

 tliemselves beiug approximately equal in size. In the case 

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

 consideralile size when seen from above, the nostrils are 

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

 is wider transversely and much less aeutelv angled inferiorly 

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



In F. li'iedii the rhinarinm is very similar to that of 

 F. salinai'um. 



In an example of F. pardalis (fig. 3, A, B, C) from INIaiiaos 

 the rhinarinm is rather more prominent than in examples of 

 F. wiedii 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 tiie Argentine, the muzzle projects, and the hairs on its 

 stmimit form, a liigh crest, which anteriorly encroaches in 

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

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

 the margin is convex. From the front view the npper edge 

 is mfsially notched by the haiiy crest, the internarial septum 

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

 young specimen of the typically-coloured form of this species 



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

 xii. p. 239, 1£03;, is clceeJy related to the better-known F. geojf'royi. 

 Pcssibly it should be regarded merely a3 a subspecies. 



