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CERVUS RICHARDS ONI I. — A u d . and Bach. 
Columbian Black-tailed Deer. 
PLATE C VI.— Males. 
C. Supra subrufus, infra albus, auriculis mediocribus, angustioribus quam 
in C. macrotide, corpore minore, ungulis angustioribus et acutioribus quam 
in uto, macula albida in natibus nulla, cornibus teretibus bis bifurcatis. 
CHARACTERS. 
Ears , moderate , narrower than in C. Macrotis ; size, less than C. Macrotis ; 
hoofs, narrower and sharper ; no light patch on the buttocks ; colour, reddish- 
brown above, white beneath ; horns, cylindrical, twice bifurcated. 
SYNONYMES. 
Cervus Macrotis. Rich (non Say) Black-tailed Deer, Fauna Boreali Americana, p. 
254, pi. 20. 
California Deer, of gold diggers. 
DESCRIPTION. 
Male. — In size this animal a little exceeds the Yirginian Deer, but it is 
less than the Mule Deer ( C . Macrotis ) ; in form it is shorter and stouter 
than C. Virginianus. 
There is a tuft of long pendulous hairs hanging down from the umbilicus 
backward to between the thighs. The horns are nearly cylindrical, and 
are twice forked ; the first bifurcation being ten inches from the base — 
about fire to six inches longer to that fork than in C. Macrotis, as 
described by Say. There is a knob, in the specimen from which we 
describe, on one horn, about four inches from the base ; the horn continues 
in a single branch for about ten inches, where it divides into two branches, 
each of which has two points ; and the antlers may be said to bear some 
resemblance to those of the Red Deer of Europe, much greater than do 
those of the Yirginian Deer or Elk. 
Ears, of moderate size ; head, proportionately a little shorter than the 
head of the Yirginian Deer and nose less pointed ; hoofs, narrow and 
