2 1 4 Bulletin American Museum of Natural History. [Vol. XXII, 



(533-584); tail vertebrae, 55.5 (51-66); hind foot without claws, 128 

 (121-133); ear from notch, 149 (140-156). Seven females: Total 

 length, 617 (587-648); head and body, 558 (533~5 8 4); tail verte- 

 brae, 59.6 (51-70); hind foot without claws, 126.6 (121-133); ear 

 from notch, 146.6 (140-156). These measurements are rather less 

 than the corresponding measurements of L. alleni. In one specimen 

 the expanse of the ears, distended laterally, is given as 14 J inches 

 (349 mm.). 



Six skulls have an occipito-nasal length of 104 (103-107), and a 

 zygomatic breadth of 46 (45-47). An old female gives a maximum 

 for the series of 120 by 46.5. 



I refer provisionally to this subspecies three additional specimens 

 from Los Limones (altitude, 3500 feet), taken April 27. They are 

 in worn and somewhat bleached pelage, and are thus not seasonally 

 comparable to the Escuinapa series taken in December. They are 

 paler and less varied with black above, and are considerably smaller, 

 the collector's external measurements being as follows : Total length 

 (3 specimens, all males), 557 (541-571) ; head and body, 506 (490-520) ; 

 tail vertebrae, 51; hind foot, 123 (121-127); ear T 43 (140-146). The 

 largest of these three specimens falls far below the smallest of the 

 Escuinapa series of males, while the average is much less. There 

 is less difference in the size of the skulls, which average 101 mm. 

 in occipito-nasal length against 104 in the Escuinapa series. This 

 indicates a somewhat smaller and perhaps separable race in the 

 western foothills of the Sierra Madre, but further material is necessary 

 to satisfactorily settle the question. 



19. Felis hernandezii (Gray). 



Five specimens, skins and skulls, immediate vicinity of Escuinapa, 

 Aug. 16, 26, and Oct. 10. All are adults; 2 are males, 2 are females, 

 and for one the sex is not recorded. 



These specimens vary greatly in size, and also somewhat in age 

 as shown by the skulls. Of the two males one is much older than the 

 other, as well as much larger (the occipital portion of the skull is 

 unfortunately broken, so that the length cannot be given) ; of the two 

 females, while one is much older than the other, it is also much smaller. 



"Ranges through western Mexico. Most common on the low- 

 lands between the Pacific Coast and the western Sierra Madre range. 

 One of the most pugnacious mammals of the cat family, often killing 

 dogs much larger than itself. It frequently kills calves, pigs, goats, 

 and sheep when smaller wild animals are not encountered. Noctur- 



