6 1 4 Bulletin American Museum of Natural History. [VoL XIX, 



This species is based on the skins and skulls of two young 

 males (probably in the second year the last molar just 

 cutting the gum), collected at Escuinapa, southern Sinaloa, 

 Decx, ii, and hence in full winter coat. In size they resemble 

 specimens of O. toltecus of corresponding sex and age, but differ 

 widely from them in coloration and cranial characters. O. 

 acapulcensis , its nearest geographical ally on the Pacific Coast 

 of Mexico, is much smaller and very different in coloration and 

 other characters. 



Lynx ruffus escuinapae, subsp. nov. 



Type, No. 14326, 3 ad., Escuinapa, Sinaloa, Mexico, Dec. 24, 1895; 

 J. H. Batty. 



General color above pale rufous varied with gray, darker on the back 

 and lighter on the sides, the middle of the dorsal region sharply striped 

 and spotted with black, the sides, from shoulders to hips, with larger 

 spots of duller brownish black; along the median line of back a nearly 

 continuous band of black, made up of two parallel, narrow, more or 

 less interrupted lines of black; nape and top of shoulders more strongly 

 rufous and less gray than the rest of the dorsal surface; top of head 

 prominently streaked and spotted with black; front and sides of head 

 gray, mixed with pale rufous, with a narrow 'black eyering nearly 

 encircled by a broad outer somewhat imperfect ring of grayish white; 

 middle lateral portion of upper lip strongly marked with black; sides 

 of neck below the ear broadly striped with black; back of ears black, 

 with a triangular patch of whitish gray extending inward from the 

 outer margin and along the edge to the outer base; inside of ears pale 

 buffy gray; fore limbs externally pale rufous, prominently blotched 

 with black, the spots becoming smaller distally and the general color 

 paler; inner side whitish, with broad half -rings and spots of black; 

 hind limbs similar, but the black spots much larger on the proximal 

 portion; middle of soles of hind feet darker than the edges, but not 

 forming a broad central blackish stripe as in most of the other mem- 

 bers of the group; ventral surface white, with a broad prepectoral 

 pale rufous band, and a slight buffy suffusion over the middle portion 

 of the abdomen; the whole ventral area, but especially the pectoral 

 region, heavily blotched with black; upper surface of tail like back, 

 with a broad apical half-ring of black, preceded by a narrow transverse 

 spot of black, and with proximally several paler half-rings of blackish 

 brown; middle of tail below white, which also shows as a slight white 

 tip. Although killed in midwinter (Dec. 24), the pelage is very short 

 and coarse in comparison with the more northern forms of the group, 

 and is immensely different from the long, soft, silky coat of L. baileyi. 



