HETEROMYS. 373 
14.8; interorbital width, 9.2; length of nasals, 14.8; width of nasals, 
4.2; upper molar series, 4.8; length of single half mandible, 17.2; 
(Bangs, l. c.) 
384. goldmani (//eteromys), Merr., Proc. Biol. Soc. Wash., xv, 1902, 
DP. -At. 
GOLDMAN’S SPINY Rat. 
Type locality. Chicharras, State of Chiapas, Mexico. 
Genl. Char. Size large; tail longer than head and body, naked; 
sole of hind foot with 6 pads. 
Color. Above dusky gray, head and back darkest; upper lip, 
inner side of limbs, hands, and feet and under parts white; tail dusky 
above, paler below, tip whitish; ears without white edges. 
Measurements. Total length, 347; tail vertebre, 199; hind 
foot, 40. 
a.—lepturus (Heteromys), Merr., Proc. Biol. Soc. Wash., xv, 1902, 
D.-42. 
SHORT-TAILED SPINY Rat. 
Type locality. Mountains near Santo Domingo, State of Oaxaca, 
Mexico. 
Genl. Char. Similar to H. goldmant, but smaller and not so black. 
Color. ‘‘Head and back grizzled with fulvous; nose and ankles 
dusky by contrast; hind feet and tail decidedly shorter; rostrum 
broader, broadening gradually to zygomata with much less of the 
usual notch.”’ 
Measurements. ‘Total length, 340; tail vertebra, 191; hind foot, 
ag.  (Merr, bag 
385. griseus (Heteromys), Merr., Proc. Biol. Soc. Wash., xv, 1902, 
Pp. 42. ° 
Gray Spiny Rat. 
Type locality. Mountains near Tonala, State of Chiapas, Mexico. 
Genl. Char. Size large; hind foot 6-tuberculate. 
Color. Above drab, grizzled with black; upper lip, hands, feet, 
and under parts white; tail above dusky, beneath whitish, tip dark 
all around; faint buff lateral line on head and body; ears without 
white edging. 
Measurements. Total length, 325; tail vertebra, 186; hind 
foot, 38. , 
386. adspersus (Heteromys), Peters, Monatsb. K. Preuss. Akad. 
Wiss. Berl., 1874, p. 357. 
SPOTTED SPINY Rar. 
Type locality. Panama. 
