PLATE I. 
(All figures are magnified two diameters.) 
1, ta, 1b. Oryzomys palustris (Harlan), type of Genus Oryzo- 
mys Baird. 
No. 2690, Bangs Collection, ¢, young adult, from Raleigh, 
North Carolina, 
2, 2a, 2b. Oryzomys navus Bangs, type of Subgenus O/gory- 
zomys bangs. 
Type, no. 8107, Bangs Collection, ¢ adult, from Pueblo Viejo, 
Sooo feet altitude, Santa Marta Mountains, Colombia. 
3, 3a, 3b. Oryzomys monochromos Bangs, type of Subgenus 
Erioryzomys Bangs. 
Type, no. 8348, Bangs Collection, ¢ adult, from El Paramo de 
Macotama, 11,000 feet altitude, Colombia. 
Drawn from nature by J. Henry Blake. 
