MEGADONTOMYS, 
FiG. 34. MEGADONTOMYS THOMASI. 
No, 7o144 U.S. Nat. Mus. Coll. ‘Twice nat, si 
e 
UPPER TOOTH ROW, LOWER TOOTH ROW 
enlarged 7 times, enlarged 7 times 
189, thomasi (Peromyscus), Merr., Proc. Biol. Soc. Wash. 
L505, 9) 5 1, 10lo Fe 
THOMAS’ GUERRERO FigeLp Mouse. 
[ype locality. Mountains near Chilpancingo, State of Guerrero, 
Mexico. Altitude, 9,700 Ieet. 
Geogr. Distr. State of Guerrero, Mexico: 
Genl, Char. Size large; tail very 
naked. 
range unknown 
long; ears large, both nearly 
Color. Above fulvous, mixed with black on back: 
beneath 
white; breast sometimes tinged with 
vellowish buff; orbital ring 
