212 Bulletin American Museum of Natural History. [Vol. XXXIV, 
Description.— Upperparts of body grizzled ochraceous and black, the 
hairs black broadly tipped with ochraceous; top of head, limbs, and whole 
ventral surface deep red; tail above at base black, the hairs tipped with 
orange, rest of upper surface orange; tail below deep black for the basal 
third, and medially the hairs are black at base nearly to the end of the 
vertebree, the tips orange or reddish orange, which toward the end of the 
tail nearly or quite conceal the black. 
Total length (3 adult specimens from Florencia and 1 from Murelia, 
collector’s measurements), 530 (520-540 mm.); head and body, 270 (260- 
280); tail vertebree, 260 (250-270); hind foot, c. u., 60. : 
Skull (1 specimen from Murelia), total length, 63; zygomatic breadth, 
37; interorbital breadth, 23; postorbital breadth, 21; breadth of braincase, 
26.3; nasals, 19 X 9.6; maxillary toothrow, 9.8. 
Specimens examined, 5.— Colombia: Florencia, 4; Murelia, 1 (all Am. 
Mus.); also a number of specimens in the British Museum, with which the 
above were compared, but which I neglected to record definitely in my 
notes). : 
Remarks.— The specimens here recorded from Florencia and Murelia 
appear to be positively referable to true zgniventris, which differs from S. 
igniventris tedrfer Thomas as indicate below. 
Urosciurus igniventris teedifer (Thomas). 
Sciurus igniventris THomas, Ann. and Mag. Nat. Hist. (7), VI, p. 1387, July, 1900 
(part, the ‘‘Bogot&é”’ specimens only). 
Sciurus igniventris tedifer THomas, Ann. and Mag. Nat. Hist. (7), XI, p. 487, 
May, 1903. 
Type locahity.— “Sabafia Grande, near Bogota, Colombia.” As Sabafia 
Grande is open pampas country, it can hardly be the true type locality of 
this large forest squirrel. A single specimen in the American Museum, 
which agrees perfectly with Thomas’s description of tedifer, is from Buena- 
vista (altitude 4500 feet), about 50 miles southeast of Bogota. 
Geographic. distribution — Known only from the vicinity of Bogota. 
Description.— Similar to S. igniventris cgniventris, except that there is 
less black at the base of the tail, and very much less on the under side of the 
tail beyond the black basal area. 
Total length (1 specimen, collector's measurements, Buenavista), 505 
mm.; head and body, 259; tail vertebrae, 246; hind foot (ec. u.), 67. 
Skull, total length, 63; zygomatic breadth, 37; interorbital breadth, 22; 
postorbital breadth, 21; breadth of braincase, 27; nasals, 19 * 9; diastema, 
17; maxillary toothrow, 10. 
