MAMMALS—CANIDAE—CANIS LATRANS, 119 
Should adult specimens from the locality of Canis frustror agree with them, then this name 
may be selected. It is possible that this specimen may belong to a Mexican species, which 
extends into the Territories of the United States only along the central table land and moun- 
tain range. The description by Wagner of a Mexican specimen will answer, in the absence of 
notes on the skeleton, for Canis latrans in general. What the Lyciscus cayotis or Mexican 
coyote of Hamilton Smith may be I am not at present able to say. 
Since the preceding article was written, additional specimens have been received without 
shedding much more light on the subject of the number of species of prairie or coyote wolves. 
Some of these from the Upper Missouri agree very*well with those described. One collected in 
the Mesilla valley has a very full and long tail, larger than in most others. I have not time 
now to remove the skull and ascertain how far it agrees with the others described from the same 
vicinity. Its character of densely and fully furred tail and general color approximate it closely 
to the specimen from the San Francisco mountains, No. 483, and substantiate still more the 
remarks made above on the possible existence of a coyote in the Rocky mountain region, speci- 
fically distinct both from that of the Upper Missouri and of the Pacific coast. 
The following detailed description of a fresh specimen of Canis latrans from the Upper Mis- 
souri, by Maximilian, taken from his Reise in das innere Nord Amerika, Il, 1841, 96, will be 
read with interest. 
Canis latrans.—The prairie wolf in size and shape occupies a position exactly intermediate 
between the wolf and fox, in dentition, however, agreeing more closely with the wolf, inas- 
much as the front teeth are lapped on either side. The shape is wolf-like, the neck short and 
thick, the body thick; the head, however, is smaller and somewhat more like that of the fox. 
The tail is short and thick, asin the wolf, the legs tolerably high ; the snout longer and more 
pointed than in the wolf; the ear is tolerably pointed, strong, firm, and shaped as in the wolf. 
The head is broad above, the end of the nose black and moist, the internal ear well haired, 
the whiskers long and black ; other similar long hairs are implanted above the eye and behind 
the corner of the mouth; the tail hangs down as far as the heel joint, and with the points of 
the hair reaches over half the heel. 
Color.—The entire animal is of a dirty greyish yellow; reddish yellow on the ears and top 
of the nose, with black tips to the hairs on the neck, back, tip, and upper surface of the tail, 
and of the sides of the neck and limbs, bright rusty yellow, or rusty reddish. Lower parts and 
inner side of the limbs whitish. Ears rusty yellow, with scattered black tips to the hairs ; 
internally whitish. Forehead and region about the eye pale greyish brown, with whitish tips 
to the hairs. Edge of upper jaw whitish ; lower jaw margined externally with blackish, else- 
where whitish. 
The hairs on the upper parts of the body are 43 inches long, close, ash grey at the root, then 
yellowish red for two-thirds the length, then with a blackish brown space, then whitish, and 
finally tipped with black. Hairs on the sides 13 inches long. In many individuals the rust 
color is entirely wanting, and a whitish grey predominates. The pupil is round, the iris is 
greyish yellow. 
