920 MR. R. I. POCOCK ON THE FEET 
Canis mesomelas Schreb. 
(Text-fig. 4, C—E.) 
The fore foot of this species is considerably more “foxy” in 
form than that of Canis anthus. 'The area between the carpal 
and plantar pads is longer and narrower, the carpal pad is smaller, 
the plantar pad is narrower and more overgrown with hairs in 
the middle behind; the area between the plantar pad and the 
notch between the third and fourth digits is longer, the pads of 
these digits are tied more tightly together, and the edge of 
the web between them and the lateral digits is more deeply 
emarginate. 
The hind foot differs from the fore foot in the smallness of the 
plantar pad and in the still deeper emargination of the edge of 
the lateral web. 
The rhinarium is acutely rounded anteriorly in profile; from 
the front view its upper edge is straight with obtusely rounded 
angles, and its lower edge acutely angled mesially with obliquely 
sloping sides, the area beneath the nostrils in front being some- 
what shallow and becoming progressively shallower laterally and 
posteriorly beneath the narial slit. 
The facial vibrisse ave normal in position and moderately 
long (see supra, p. 901). 
Cerdocyon microtis Sclater. 
(Text-fig. 5.) 
= Canis sclateri Allen. 
A single specimen from the Amazons. 
Fore feet longer and more loosely webbed than in C. anthus, 
the third and fourth digits joined by a wider web, the distance 
between them only a little less than that between the second and 
third and fourth and fifth. Plantar pad large, but rather smaller 
relatively than in C. anthus, its median lobe wider and rounder. 
Carpal pad high up, very small, and conical. Claws short. 
Hind feet longer and narrower than fore feet and with smaller 
plantar pad, the posterior borders of the pad not deeply emar- 
ginate. Hairs between the pads thick, but not specially long. 
The rhinariwm is nearly rectangular anteriorly in profile view. 
Seen from the front its upper edge is straight and transverse 
with rather widely rounded angles ; its inferior edge is strongly and 
tolerably evenly convex, owing to the great depth of the portion 
below the nostrils in front, the portion below the slit of the 
nostrils behind narrow ; hairy area of the lip below the rhinarium 
shallow, its median slit continued upwards on to the rhinarium 
as a groove which ascends a little higher than the inferior rim of 
the nostrils. 
The faciai vibrisse moderately long—shorter, that is to say, than 
in C. mesomelas, Ps. gracilis, and the species of Vulpes; normal 
in position, except that the superior genal tuft, consisting of two 
f i. 
