On new Species of Sylvilagus from Colombia. 31 
II.—Two new Species of Sylvilagus from Colombia. 
By OLpFIELD THOMAS. 
(Published by permission of the Trustees of the British Museum.) 
Tue British Museum owes to Frére Apollinaris Maria of 
Bogota four cotton-tails of the genus Sylvilagus from tlie 
neighbourhood of that place. ‘They belong to two species, 
neither of which can I identify with any older-known form. 
One is a member of the short-eared group of which S, sur- 
daster and meridensis are members, and may be called 
Sylvilagus apollinaris, sp. n. 
Size about as in S. meridensis. Fur long, of medium 
texture, the longer hairs of the back about 19-20 mm. in 
length ; underfur soft and fine, about 11-12 mm. long. 
General colour as usual, mixed black and greyish buffy, the 
dorsal hairs with dark bases (about 8 mm.), with a 4 mm. 
pale ring, and the long black tip about 7 mm. in length. 
The general tone resulting is darker than in the longer-eared 
section of the genus, paler than in surdaster, less smoky than 
in meridensis. Under surface white without buffy or cinna- 
mon tinge, the belly-hairs very faintly greyer at their bases, 
Face with rather well-marked supraorbital white stripe, and 
a second one along the hinder end of the cheek. Ears very 
short, little more than half the length of the nuchal patch, well- 
haired, the proectote grizzled with the margin black, the met- 
entote white. Nuchal patch large, strong pinkish cinnamon. 
Upper surface of forearms, hands, lower leg, and feet pinkish 
cinnamon or cinnamon-buff, the tips of the digits alone 
whitish. Rump more buffy than back, the tail, which is a 
mere little knob, similar to it for the most part, but with 
a darker area above, and white below. 
Skull broad, upper surface of the brain-case very strongly 
granulated. LPostorbital processes well developed, slightly 
spatulate, just free of the crafiial bones terminally. Palatal 
foramina ending level with the front edge of the anterior 
premolar, narrow, not widened mesially, their broadest point 
at their posterior end. Palatal bridge fairly broad, without 
any trace of a posterior projecting spine. Bulle lost in type, 
but those of a young specimen which appears to be of the 
same species fairly well developed, markedly Jarger than in 
S. surdaster. 
