286 NEOTOMA. 
Genl. Char. ‘‘Externally similar to N. 2. albigula, but averaging 
rather larger, with a shorter and broader skull and much heavier 
dentition.’’ (Allen, 1. c.) 
Measurements. Total length, 356; tail vertebre, 159; hind foot, 
32; ear from notch, 30. Skull: total length, 45; Hensel, 38; length, 
of nasals, 18; zygomatic width, 24; width of braincase above zygo- 
mata, 18.5; mastoid width, 18; interorbital constriction, 6; length of 
upper tooth row, 9. 
290. orizabz (Neotoma), Merr., Proc. Biol. Soc. Wash., 1x, 1894, 
Date or 
Or1zABA Woop Rat. 
Type locality. Mt. Orizaba, State of Puebla, Mexico. 
Geogr. Distr. States of Puebla, Tlaxcala and Vera Cruz, Mexico. 
Genl. Char. Similar to N. jfulvienter, but more buffy ochraceous 
above, and white on belly; feet shorter. 
Color. Above ochraceous buff, mixed with black on back; head 
grayish; under parts, hands, and feet white; on each side of breast 
a spot of salmon color; tail above dusky, beneath whitish. 
Measurements. Total length, 356; tail vertebre, 163; hind foot, 33. 
291. tenuicauda (Neotoma), Merr., Proc. Biol. Soc. Wash., vil, 1892, 
Pp: 2OG. 
SLENDER-TAILED Woop Rat. 
Type locality. North slope of the Sierra Nevada de Colima, State 
of Colima, Mexico. Altitude, 12,000 feet. 
Geogr. Distr. State of Colima, Mexico. 
Genl. Char. Size small; tail and ears almost naked. 
Color. Above dark brown, tinged with yellowish fulvous; darker 
on flanks; under parts whitish; salmon color at arm pits; hands and 
feet whitish; tail above dusky, beneath whitish. 
Measurements. Totai length, 340; tail vertebre, 160; hind foot, 31. 
bella felipensis Elliot, Pub. Field Columb. Mus., 1903, Ill, p. 217. 
Zoology. 
SAN FELIPE DESERT Rat. 
Type locality. San Felipe, Gulf of California, Lower California, 
Mexico. 
Genl. Char. Largest of the pale colored desert rats, nearest to 
N. bella; feet and ears larger; tail longer. Skull with shorter and 
broader nasals, shorter pterygoid fossa, wider basioccipital and basi- 
sphenoid; bulla much smaller; braincase narrower posteriorly. 
Color. Upper parts cream buff, lined with black; sides cream 
color; lips, hands, feet, lower portion of sides, and under parts pure 
white; basal part of hairs on side and under parts plumbeous, except 
