70 The Mammals of Colorado 
County; near Fruita, Mesa County; and Coventry and Bedrock, 
Montrose County. The Montrose County specimens are dark 
colored, and resemble the form called by Osgood P. apache melanoHs, 
the type of which came from Chihuahua, Mexico, but which seems 
to have no well defined distribution, having been taken here and 
there in various places in Arizona and New Mexico, and frequently 
in localities not far removed from those where the typical form is 
found. It has also been taken at Medano Ranch, Costilla County. 
Perognathus flavus (Lat., golden yellow). Baird's Pocket 
Mouse. 
Perognathus flavus Baird, Proc. Acad. A^at. Set. Phila., p. 332 
(1855). 
Type locality. — El Paso, Texas. 
Measurements. — Total length, 4.5; tail vert., 2.0; hind foot, 0.62. 
Description. — (From a specimen taken at Springfield, Baca Co., 
Colorado, April 20) : Above pale buffy, lined with black, much as 
in P. flavescens; a large clear buff post-auricular spot; under parts 
white; tail grayish white. 
Distribution. — Baird's Pocket Mouse has been taken in Texas, 
Oklahoma, New Mexico, Colorado, Nebraska, and Chihuahua, Mexico. 
In Colorado it has quite a wide distribution, having been taken in 
Kit Carson, Adams, Weld, Larimer, El Paso, Fremont, Chaffee, 
Costilla, Prowers, and Baca Counties. The highest elevation of 
which we have a record is Fort Garland, at nearly 8,000 feet. The 
list of counties shows a distribution over the entire plains region 
and up the Arkansas River to Salida; while the Costilla County 
records show that it is found in the San Luis Valley, though over 
how great a portion of it remains to be seen. 
Habits. — A female taken in Baca County, April 20, con- 
tained four embryos. 
Perognathus hispidus paradoxus (hispidus, Lat., rough, 
bristly; paradoxes, Grk., an incredible statement, 
a paradox). Kansas Pocket Mouse. 
Perognathus paradoxus Merriam, A' . A. Fauna, No. i, p. 24 (1889). 
Type locality.— Trego County, Kansas (A. B. Baker, Oct. 17, 
1884). 
Measurements. — (From Osgood /. c): Total length, 8.75; tail 
vert., 4.25; hind foot, 1.05. 
Description. — (From a specimen taken at Monon, Baca Co., 
