10 CALUROMYS. 
Geogr. Distr. Nicaragua in Central America to Peru in South 
America. 
Genl. Char. Tail longer than head and body, furred for one- 
third of its length. 
Color. Upper parts, sides, and outer side of limbs brownish rust 
color; under parts soiled white; head brownish gray with a median 
dusky stripe from forehead to nose; orbital region brown; gray dorsal 
stripe from between shoulders to root of tail; gray line behind fore- 
arms and one on leg from knee upward; lower part of arms and 
Fic. Ill. CALUROMYS DERBIANUS. EARL OF DERBY’S OPOSSUM. 
hands white; feet dusky; tail brown on basal portion, naked part 
pinkish spotted with dark brown; ears pale brown, naked. 
Measurements. Total length, 765; tail, 425; hind foot, 47.5; 
Gales: 
laniger pallidus (Philander), Thomas, Ann. Mag. Nat. Hist., 7th 
Ser., Iv, 1899, p. 286. 
PaLeE WooLty Opossum. 
Type locality. Bogava, Chiriqui, Panama. Altitude, about 750 
feet. 
Geogr. Distr. Southeastern Central America. 
Color. Above pale gray or pale rufous; face brownish; forearms, 
shoulders, and sides of hips pale gray; hind legs whitish or tinged 
with rufous; tail whitish gray, naked part mottled. 
Measurements. ‘Total-length, 587; tail, 398; hind foot, 43; ear, 32. 
Skull: ‘‘Greatest length, 61; greatest breadth, 35; length of upper 
” 
molars, 9. 
