RODENTIA-LEPORIDAE-LEPUS ARTEMISTA. 
603 
thighs, the suhtermiaal brown band is an obsolete trace, separating an ashy white portion from 
a gray. The same condition prevails on most of the rump. 
The preceding description is made from a very finely colored specimen from Chihuahua, which I 
have referred to the Lepus artemisia of Bachman. Although it does not agree exactly with 
his description, compared with a specimen, No. 86, brought from the Columbia river by Town¬ 
send , there are no essential differences. The principal distinction is a less degree of black. 
There is a little more black on the tip of the ear ; the ear, too, is a little more fully furred. A 
specimen collected by Dr. Suckley, on the Missouri river, 100 miles above Fort Union, agrees 
precisely with those from Chihuahua. 
A small hare from between San Antonio and El Paso, collected by Mr. Clark, differs in some 
points, and especially in the prevalence of a yellow tint over those portions of the body usually 
light-colored. I would have less hesitation perhaps in separating it from L. artemisia on this 
account, did I feel assured that this coloration has not been caused by the skin while in alcohol, 
having become impregnated with some foreign substance. The ears have less hair upon them, 
and the black tip is more decided ; for the present,however, I prefer to call this L. artemisia. 
Measurements of skulls. 1 
Skull. 
Inches. 
lOOths of 
length. 
Inches. 
lOOths of 
length. 
Total length (to end of nasals)_ 
2.64 
1.00 
2. 54 
1. 00 
Greatest width--—..... 
1.36 
.61 
1.26 
.49 
Distance between orbits .... 
.68 
. 25 
. 64 
.25 
Nasal bones, length_....... 
1.12 
.43 
1.09 
.43 
width behind_..._ 
. 56 
.21 
.50 
.20 
before___ 
.36 
.13 
.33 
. 13 
Upper incisors from front to molars___ 
.86 
.33 
.84 
.33 
hinder margin of palate__ 
1.15 
.43 
1.06 
.42 
height____ 
.31 
.11 
.28 
. 11 
width between external edges. 
.19 
.07 
. 16 
.06 
Upper molars, length taken together... 
.48 
. 18 
.43 
.17 
distance between_ 
.37 
. 13 
.31 
. 12 
Lower jaw, length---- 
2. 07 
.78 
1. 94 
.74 
height___ 
1.26 
.48 
1.24 
.48 
arc..... 
2. 11 
. 80 
2. 04 
.76 
1 These skulls are from the Texas plains. They were measured a goodjsdiile ago, before being entered, and cannot now 
be readily identified. 
Since preparing the preceding article a large number of additional specimens have been 
received from various localities, and I have been very much perplexed in the attempt to find 
satisfactory characters for distinguishing the Lepus artemisia and sylvaticus. Thus taking a 
skin of each, one from Fort Dalles, 0. T., (992,) and one from Washington city, (465,) both males, 
