NEOTOMA. 285 



Measurements. Total length, 333; tail vertebrae, 170; hind foot, 

 34; ear, 25. 



b. angiisticeps (Neotoma), Merr., Proc. Biol. Soc. Wash., ix, 1894, 



p. 127. Elliot, Syn. N. Am. Mamm., 1901, p. 162. 

 NARROW-HEADED WOOD RAT. 



Type locality. Southwest corner Grant County, New Mexico. 



Geogr. Distr. Northern Mexico (State of Chihuahua), and south- 

 western New Mexico. 



Genl. Char. Similar to N. i. albigula; ears smaller; color more 

 fulvous. 



Color. Above fulvous; ochraceous buff on head, lined with black; 

 feet and under parts creamy white to roots of hair, except on belly, 

 where the base of hairs is plumbeous; tail grayish brown above, 

 white beneath. 



Measurements. Total length, 335; tail vertebras, 150; hind foot, 

 33; ear, 25. Skull: basal length, 42; Hensel, 39.5; zygomatic width, 

 24; interorbital constriction, 6. 



c. albigula (Neotoma), Hartley, Proc. Calif. Acad. Scien., 2d Ser., 

 1894, p. 157, pi. xn. Elliot, Syn. N. Am. Mamm., 1901, p. 162. 

 WHITE-THROATED WOOD RAT. 



Type locality. Vicinity of Fort Lowell, near Tucson, Pima County, 

 Arizona. 



Geogr. Distr. State of Sonora, Mexico, north into Arizona. 



Genl. Char. Similar to both N. intermedia and N. mexicana, but 

 the yellow ground color of upper parts and sides is deeper and the 

 general color is lighter. 



Color. Above pale yellowish brown mixed with black; central 

 line on back darker; sides pale yellow mixed with a pale brown; feet 

 dusky white; under parts grayish white, except throat, which is 

 pure white to base of hairs; tail blackish brown above, soiled white 

 beneath; ears light brown on naked part. 



Measurements. Total length, 342; tail vertebrae, 153; hind foot, 

 32. Skull: occipito-nasal length, 44; Hensel, 37; zygomatic width, 

 23; interorbital constriction, 5; length of nasals, 16; palatal length, 

 20; length of upper tooth row, alveolar border, 6.5; length of man- 

 dible, angle to alveolus of incisor, 20.5. 



d. durangce (Neotoma}, Allen, Bull. Am. Mus. Nat. Hist., 1903, 



p. 602. 

 DURANGO WOOD RAT. 



Type locality. San Gabriel, State of Durango, Mexico. Altitude, 

 7,000 feet. 



