244 PEROGNATHUS. 



Measurements. Total length, ii8; tail vertebrae, 58; hind 

 foot, 16.5. 



370. flavus. (Perognathus), Baird, Proc. Acad. Nat. Scien. Phil., 



i855> P- 332- 



Type locality. El Paso, Texas. 



Geogr. Distr. Northeastern Colorado and western Nebraska to 

 Mexico, westward to central Arizona, east to western Texas. 



Genl. Char. Size very small; ear without antitragal lobe; tail less 

 than head and body, audital bullae meeting below basisphenoid. 



Color. Above pale fulvous lined with black, no lateral stripe; 

 feet and under parts white; buff patch behind ear and white one on 

 lower margin; orbital ring pale fulvous; tail pale brownish or olive 

 gray, of nearly same hue above and below. 



Measurements. Total length, 117; tail vertebrae, 71; hind foot, 

 17; ear, 4. 



a.—bimaciclatus. [Perognathus), Merr., N. Am. Faun., No. i, 1889, 

 p. 12. 



Tvpe locality. Fort Whipple, Yavapai County, Arizona. 



Gcogr. Distr. Southeastern Utah to central and northeastern 

 Arizona. 



Genl. Char. Small; tail shorter than head and body; ear large, 

 no antitragal lobe. Skull: mastoids large; lower premolar smaller 

 than last molar. 



Color. Above mixed buff and black, the latter predominating; 

 lateral stripe buff; large postauricular buff spot; feet and under parts 

 white; tail pale brown on proximal two-thirds; distal third blackish. 



Mcasurc/iients. Total length, 121; tail vertebrae, 61 ; hind foot, 

 17.5; ear, 5. 



b.—fuli^inosus. (Perognathus), Merr., N. Am. Faun., No. 3, 1890, p. 74. 



Type locality. Northeast of San Francisco Mountain, Arizona. 

 Altitude 7,000 feet. 



Geogr. Distr. Lava beds near San Francisco Mountain, north- 

 ern Arizona. 



Genl. Char. Colors dark, under parts fulvous. 



Color. Above sooty brown tinged with yellowish brown; spots 

 behind eyes and ears yellowish; lateral stripe fulvous; under parts 

 fulvous; throat and breast white. 



Measurements. Total length, 116; tail vertebrx', 58; hind foot 

 18; ear, 4. 



371. apache. (Perognathus), Merr., N. Am. Faun., No. i, i88g, p. 14. 

 flavus, Merr., N. Am. Faun., No. 3, 1890, p. 73. 



Txpe locality. Keam Canon, Apache County, Arizona. 



