Buff-Bellied Pocket Mouse 67 
Perognathus fasciatus infraluteus (Lat. fascia, a band; 
infra, below gluteus, yellow or buff). Buff-bellied 
Pocket Mouse. 
Perognathus infraluteus Thomas, Ann. Mag. Nat. Hist., 6th ser., 
xi., p. 406 (1893). 
Type locality. — Loveland, Larimer Co., Colo. 
Measurements. — (From Osgood): Total length, 5.0; tail vert., 
2.32 ; hind foot, 0.67. 
Description. — (From specimen taken at Loveland, Larimer 
Co., Colo., Oct. 19, 1894, B. S. No. 69345). BufiE above, heavily 
and uniformly lined with black, except on sides, white spots over 
eyes, and back of ears; under parts buff; tail like back. The buff 
under parts distinguish it from all other Colorado species. 
Distribution. — The Buff-bellied Pocket Mouse has thus far been 
taken at the type locality only, which is Loveland, Larimer County, 
Colorado. 
Habits. — The various species of Pocket Mice are of similar 
habits. These are not as well known as they might be, 
as the animals are of nocturnal habits and live in burrows, 
so that they are but seldom seen during the day. Their 
burrows are small in size, and from their mouths little 
mounds of earth are thrown out, and as in the case of the 
kangaroo rats, the entrances are usually closed with earth 
during the day, much more invariably than with the rats, at 
least in such cases as have come under my observation. The 
burrows have two or more entrances, and these often open 
under a weed or bush. Yuccas are favorite places, and where 
there are clumps of prickly pear plants (Opuntia) there will 
be found the holes of the Pocket Mice, if any are about. 
Their food consists of seeds, which are carried to their store- 
rooms in the cheek pouches. They are not known to hiber- 
nate. They rather prefer sandy soil. 
But little is known about their breeding but this takes 
place in the spring and very likely through the summer. 
Four or five young are produced at a birth. 
