216 NYCTOMYS. 
192. sumichrasti (Hesperomys), Sauss., Rev. Mag. Zodl., 2me Sér., 
1860, Pp. 07, pl..g; He: 2. 
SUMICHRAST’S VESPER Rat. 
Type locality. ‘‘Habite le versant oriental de la Cordiliére,”’ 
State of Vera Cruz, ? Mexico. 
Geogr. Distr. Eastern Mexico, State of Vera Cruz to Isthmus of 
Tehuantepec. 
Genl. Char. Ears long, higher than wide; nose pointed; hind 
feet short. 
Color. Upper parts isabella or pale orange, clearer on flanks; 
under parts, chin, and lower jaw on side of face pure white; tail 
brownish red; feet pale yellowish brown. 
Measurements. Total length, 230; tail, 106; hind foot, 23. Skull: 
occipito-nasal length, 58; Hensel, 49; zygomatic width, 30.5; inter- 
orbital constriction, 1o; length of nasals, 16; palatal length, 25; 
length of upper molar series, 10. 
193. decolorus (Siztomys), True, Proc. U.S. Nat. Mus., xvi, 1894, p. 689. 
FapED VESPER Rat. 
Type locality. Rio de las Piedras, Honduras. 
Geogr. Distr. Tehuantepec, Mexico, into Honduras, Central 
America. 
Genl. Char. Similar to R. sumichrasti, but paler, tail shorter; 
ear naked, prominent; soles naked; tail covered with long hairs. 
Color. Above brownish isabelline, middle of back washed with 
gray; under parts and cheeks white; orbital ring dark brown; tail 
chocolate brown; hands like back, feet dusky, toes whitish; ears 
chocolate brown. 
Measurements. Total length, 193; tail vertebrae, 85; hind foot, 
23; ear, 14. 
194. nitellinus (Nyctomys), Bangs, Bull. Mus. Comp. Zo6él., xxx1x, 
1902, p. 30. 
BoguETE VESPER Rat. 
Type locality. Boquete, Chiriqui, Panama. Altitude, 4,000 
feet. 
Genl. Char. Similar to R. decolorus, but larger and darker. 
Color. Above yellowish cinnamon, dorsal region darker; lower 
sides shaded with orange buff; orbital ring, and space between eyes 
and nose black; under parts white; tail blackish, unicolor; hands 
white; feet, toes, and sides of tarsus white; middle of tarsus dark 
brown; ears dusky. 
