3U4 PEROGNATHUS. 



Measurements. Total length, 130; tail vertebras, 73; hind foot, 

 19; ear, 6.5. Skull: total length, 21.5; Hensel, 14.5; zygomatic width, 

 11; interorbital width, 5; mastoid width, 12; greatest width of pa- 

 rietal, 10; length of interparietal, 2.5; length of nasals, 8.4; palatal 

 length, 7.5; length of upper tooth row, 4; length of mandible, angle 

 to tips of incisors, 10.5; length of lower tooth row, 3. 



751. Perognathus callistus Osgood. 



Perognathus callistus Osgood, N. Am. Faun., No. 18, 1900, p. 28. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 245. 

 Zool. Ser. 

 Osgood's Pocket Mouse. 



Type locality. Kinney Ranch, Green River Basin, near Bitter 

 Creek, Sweetwater County, Wyoming. 



Geogr. Distr. Known only from the type locality. 



752. Perognathus elibatus Elliot. 



Perognathus elibatus Elliot, Pub. Field Columb. Mus., iii, 1903, 

 p. 252. Zool. Ser. 

 Mount Pinos Pocket Mouse. 



Type locality. Mount Pinos, Ventura County, California. Alti- 

 tude, 5,000 feet. 



Geogr. Distr. Known only from the type locality. 



Genl. Char. Size small ; color dark ; tail long. 



Color. Upper parts black and buff, the former color predomi- 

 nating; nose, sides of face, line over eye, and lateral line cream buff; 

 under parts, hands, and feet white ; tail, basal half above bufif , tinged 

 with dusky, remainder dusky, beneath yellowish white; ears brown, 

 a white spot over each side of margin near notch; whiskers black; 

 line on sides of nose black. 



Measurements. Total length, 146; tail, 77; hind foot, 20.5; ear, 

 7. Skull: total length, 22; Hensel, 15; zygomatic width, 11; inter- 

 orbital constriction, 5; mastoid width, 12; greatest width of parietal, 

 9; length of nasals, 7; palatal length, 9; length of upper tooth row, 

 3; length of mandible, 11 ; length of lower tooth row, 3. 



753. Perognathus panamintinus (Merriam). 



Perognathus longimembris panamintinus Merr., Proc. Acad. Nat. 



Scien. Phil., 1894, p. 265. 

 Perognathus panamintinus Elliot, Syn. N. Am. Mamm., F. C. M. 

 Pub., II, iqoi, p. 245. Zool. Ser. 

 Panamint Pocket Mouse. 



Type locality. Perognathus Flat, Panamint Mountains, Inyo 

 County, California. Altitude, 5,200 feet. 



