196 On new South-American Mammals. 
Caluromys laniger pyrrhus, subsp. n. 
General colour of back rich rufous, not unlike that of some 
of the red Marmose of the IZ. murina group; a faint trace 
of the spinal white patch present. Face short-haired, grey, 
contrasting with the rufous nape and occiput, the median 
dark line strongly marked. Cheeks and under surface dull 
buffy white, the hairs almost entirely without slaty bases. 
Forearm pale greyish, becoming white terminally on the 
metacarpus. Legs duller grey, continuous with a large 
greyish patch on the outer side of the hips. Woolly part of 
tail passing from rufous proximally to brown terminally ; 
extension of fur on upperside of tail only about an inch 
beyond that on lower side; naked part brown for about 3 inches, 
then white. 
Dimensions of the type (measured in skin) :— 
Head and body 285 millim. ; tail 4005; hind foot (s. u.) 42; 
car 28. 
Skull: basal length 53; zygomatic breadth 34; inter- 
orbital breadth 10°5 ; breadth across postorbital processes 17°5 ; 
palate length 31; combined length of mp.', m.', and m.,° 
(m.1-8 of Catalogue) 8. 
Hab. §.W. Colombia and N.W. Ecuador. Typical 
locality Rio Oscuro, near Cali, Cauca River, Colombia. 
Alt. 1000 m. Other specimens from §. Javier, Lower Rio 
Cachabi, N.W. Ecuador. 
Type. Male. B.M. no. 99. 9. 6. 50. Original number 
482. Collected June 1898 by Messrs. Batty, Parish, & Co. 
Native name “ Chucharata” at Cali, ‘‘Cucumbi” at 
S. Javier. 
This form of the Woolly Philander differs by its bright 
rufous colour from the dark C. /. eicur, Bangs, of Sta. Marta, 
Bogota, and the Oriente of Ecuador, on the one hand, and 
from the peculiar pale guayanus of S.W. Ecuador on the 
other. Its light forearms and hands also distinguish it from 
the former, as from the Amazonian ochropus, Wagn., and the 
Peruvian ornatus, Tschudi. Perhaps it is really most allied 
to the Central-American derbianus, Waterh., but differs by 
the reduction of the white dorsal patch to a mere trace, the 
more defined frontal stripe, and the much darker colour of the 
woolly part of the tail. The unusually slight difference in 
the extension of the upper and lower fur on the tail is also a 
well-marked character common to all the specimens examined. 
The Ecuadorean specimens are like that from Colombia in 
every respect. 
