MAMMALIA. 
17 
duces a deep brown tint, which is almost uniform throughout the body 
and limbs. On the head the yellowish colour predominates over the black, 
excepting on the tip of the muzzle, and thence back to the eye, where the 
hairs are of a brownish black colour. On the throat the hairs are brown. The 
underside of the tarsus is black, and on the outer side of the fore-foot there 
is a black mark which extends upwards on to the wrist. The tail is long and 
bushy ; towards and on the base, the hairs are annulated with black and 
yellow, like those of the body ; but beyond this they are of a more uniform 
colour, each hair being brown at the base, and gradually shaded into black 
towards the tip. The ears are small and rounded, and covered with hairs 
of the same colour as those on the head. The claws are of a large size, and 
white colour ; the toes are united for a considerable portion of their length 
by the interdigital membrane. 
Length from nose to root of tail 
to base of ear 
of tail (hairs included) 
In. Lines. 
25 0 Length of ear 
3 6 Height of body at shoulders 
19 0 
In. Lines 
1 0 
12 0 
Habitat, Rio de Janeiro, Brazil. {May.) 
“ This cat was given me by an old Portuguese priest, who had hunted it down 
in a thick forest with a small pack of dogs, after a severe chase. It was killed 
near the Gavia mountain, at the distance of a few miles only from Rio de 
Janeiro, where it was considered uncommon.” D. Although small, compared 
with the Puma, ( Felis concolor, Auct.), this cat, in its slender lengthened body, 
small head, long tail, and stout limbs, decidedly evinces an affinity to that species. 
According to the dimensions of the Yagouaroundi given by Azara, Desmarest, and 
Temminck, it appears that the tail is considerably shorter in proportion in the 
specimens examined by those naturalists, than in the present individual, and the 
difference was such, as to induce Mr. Martin to believe that the latter was a 
distinct species; he accordingly proposed for it the specific name of Darwinii. At 
the time that Mr. Martin described the specimen alluded to, I was also inclined 
to believe it was a distinct species. I mention this because I am afraid my 
opinion had a slight share in influencing Mr. Martin’s determination. I have 
since seen many specimens, and upon comparing their dimensions, I find that the 
proportionate length of the tail varies more than is usual in other species of cats, 
and that the difference in the length in this member is not combined with any 
other distinguishing character. In colouring there is also a considerable varia- 
tion, some specimens being almost black, and having the hairs but obscurely 
annulated with white ; in others, the hairs are more distinctly annulated, and 
the head assumes a grayish hue. Others again, are brown, or black brown, 
D 
