136 The Mammals of Colorado 
FIG. 44. TAWNY DEER-MOUSE, P. YufinUS (ON THE LEFT), AND 
true's deer-mouse, p. truei (on the right) , 
Photographed from dead specimens to show relative size of ears. 
Note large ears of P. truei. E. R. Warren, Photo. 
Habits. — In common with the other big-eared deer -mice this 
species seems to prefer to hve among rocks, and there it is 
almost invariably found, though it has been known to take 
up its abode about a wheat stack. Its food is similar to that 
of the other species, any kind of seeds, berries, and insects, 
and a little flesh w^hen it can get it. It breeds in spring 
and summer, bearing from four to six young in a litter. 
Peromyscus nasutus (Lat. nasus, nose). Long-nosed 
Deer-Mouse. 
Vespcrimus nasutus Allen, Bull. Amer. Mtis. Nat. Hist., iii., pp. 
299-300 (1891). 
Type locality. — Estes Park, Larimer County, Colorado. 
Measurements. — Total length, 7.5 ; tail vert., 3.75 ; hind foot, 0.95 ; 
ear (dried skin), 0.8. 
Description. — (From a specimen taken near Colorado Springs, 
Dec. 2 2d) : Fur hardly as long as in P. truei; color above darker, es- 
pecially on the back, where there is much more black intermixed, 
in fact only the sides show the pure unmixed ground color; ochra- 
