Rocky Mountain Cottontail 47 
They may be found in brushy places, amongst weeds and grass, 
among rocks, out on the prairie, or in the timber. They hve 
in holes, which they may dig for themselves, but the aband- 
oned hole of a prairie dog or other animal is most commonly 
used. Frequently one may be seen squatting in a form under 
a weed or bush. The young are born in the burrows, and 
two or more litters are born each season; the number in a 
litter is from three to seven; they are born naked and blind, 
and suckled for three or four weeks, and then shift for 
themselves. 
The Nebraska Cottontail, like other species of the floridanus 
group to w^hich it belongs, is fond of brushy places when such 
are at hand, but at Barr, where there is practically no brush 
in which it can live, it was found along the banks of the 
large ditches, among the rank weeds, and also in old prairie- 
dog holes. 
Sylvilagus nuttallii pinetis (nuttallii, for Thomas Nuttall, 
the naturalist; pinetis, denoting one living among 
pines) . Rocky Mountain Cottontail. 
Lepus sylvaticus pinetis Allen, Bull. Amer. Mus. Nat. Hist., vi., 
p. 348 (1894). 
Type locality. — White Mountains, south of Mount Ord, Arizona. 
Measurements. — Total length, 15.75; tail vert., 2.0; hind foot, 
3.9; ear from notch, 2.15-2.35. 
Description. — (From a specimen taken at Lake Moraine, El Paso 
County, altitude 10,250 feet, January 14th.) Above, including top 
of head, a dark pinkish buffy, grizzled or marked with black; rump 
patch dull iron-gray; sides of head and body grayer and paler; nape 
rusty rufous; pectoral band similar, but paler; rest of underparts 
white; outside of ears grayish, grizzled, and with black border; 
upper side of tail brownish, grizzled with gray; front and sides of 
fore legs bright rusty rufous ; back and outside of hind legs more 
cinnamon. 
A specimen from the same locality, taken September ist, is very 
much darker, more black on back, and especially on rump, which is 
blackish rather than gray ; rufous patch on nape much larger ; upper 
surface of tail with much rusty; pectoral band darker, more rufous. 
