302 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
come in more naturally with the variety sylvaticus series. They agree in 
their small size with other Texas specimens, but, though rather paler than 
average sylvaticus, do not present the degree of pallor that characterizes the 
specimens from the plains further westward. 
Var. ARIZONA. 
Desert Hare. 
Rather smaller than variety nuttali, and paler, presenting the extreme 
phase of differentiation in respect to pallor of coloration. The specimen on 
which this variety is primarily based was collected by Dr. Elliott Coues at 
“Beal’s Springs, fifty miles west of Fort Whipple, Arizona, September 8, 
1865”. On the back of the label is written, in Dr. Coues’s handwriting, 
“The ¢ommon ‘cotton-tail’ of the Territory—new species ? ?—artemisia?” ; 
indicating that he recognized it as something different from the common 
so-called Artemisia Rabbit of the plains. The color above is a very pale, 
faded, yellowish-gray, very slightly mixed with black. The nape-patch is 
pale yellowish-fulvous, and the usual reddish parts of the legs and feet are 
pale yellowish-brown. The most important character, however, is the great 
size of the ears, which give it at first sight almost the appearance of a young 
“Jack” Rabbit. The ears are fully a third longer, and proportionally broader, 
than in specimens of the typical Sage Hare (var. nuétalli) from the arid 
plains of Utah, Colorado, Wyoming, and neighboring regions northward. 
Other specimens, from Camp Grant (sixty miles east of Tucson), Arizona, 
collected in February, 1867, by Dr. E. Palmer, agree with Dr. Coues’s speci- 
men in the great length of the ears, but in color do not differ materially from 
the ordinary form of var. nuttalli. : 
Its habitat seems to be the deserts of Arizona, and its chief characteristic 
the great length and size of the ears. 
Var. AUDUBONI. 
Audubon’s Hare. 
About the size of variety sylvaticus, or a little less, with rather longer 
ears, and nearly the coloration of L. trowbridgei. The coloration of the 
original specimens from near San Francisco and San Diego, Cal., presents 
much the same peculiar phase in respect to the dorsal surface as that of 
