372 HETEROMYS. 
Measurements. Total length, 220-230; tail vertebra, 115-123; 
hind foot, 27-28; ear, 13.5. Skull: total length, 30; basal length, 24; 
greatest mastoid breadth, 13.5; interorbital constriction, 7; length 
of nasals, 12; palatal length, re. 
381. desmarestianus (Heteromys), Gray, Proc. Zodl. Soc., 1868, 
p. 204. Alston, Biol. Centr. Amer., Mamm., I, 1880, p. 167, 
pl. 27, Tous 
CoBan Spiny Rat. 
Type locality. Coban, Guatemala. 
Geogr. Distr. Guatemala. 
Genl. Char. Ears moderate; teeth small, 
keeled, narrow in front.”’ 
Color. ‘‘Chestnut brown; tip of nape, lips, chin, and under side 
of the body, hands, and feet and under side of tail white; spines of 
back white with chestnut tips.’”’ (Gray, 1. c.) 
Measurements. Total length, 247.5; tail, 118.5. 
‘upper flat, lower 
382. longicaudatus (Heteromys), Gray, Proc. Zodl. Soc., 1868, 
Pp. 204. 
LONG-TAILED Spiny Rat. Tultusia in Guatemala, also applied to 
Heterogeomys torridus. 
Type locality. Mexico. 
Geogr. Distr. State of Oaxaca, Mexico; range unknown. 
Genl. Char. Tail long; no lateral line; soles 6-tuberculate. 
Color. Above blackish brown, in some specimens with rufous 
intermixed; sides dark drab brown, uniform, or mixed with rufous; 
limbs uniform in color with sides; under parts, hands, and feet white; 
tail above blackish brown, beneath yellowish. 
Measurements. Total length, 247.15; tail, 118.75. 
383. repens (Helcromys), Bangs, Bull. Mus. Comp. Zodél., xxxr1x, 
1902p. 45. 
BoQueETE SPINY Rat. 
Type locality. Boquete, Chiriqui, Panama. Altitude, 4,000 feet. 
Genl, Char, Size large; feet large; soles 6-tuberculate. 
Color. Top of nose and face grayish dusky; upper parts of body 
mixed dusky, brown, and tawny ochraceous; no lateral line; upper 
lip, under parts, and inner sides of arms and legs white; upper sur- 
face of arms gray; outer surface of legs dusky; tail above dusky, 
beneath white, pencil whitish; ears dusky, bordered with whitish. 
Measurements. Total length, 282-300; tail vertebra, 145-155; 
hind foot, 32-33; ear, 14-15. Skull: type; basal length, 31.4; 
occipito-nasal length, 35.4; zygomatic width, 16.4; mastoid width, 
