129 
tint of S. annulatus might be described as yellowish grey, whilst that 
of the present animal is rusty grey; and especially by the bright 
rust-like tint of the under side of the limbs, and the pale rust or 
rusty white colour of the belly. The heel is clothed with hair. 
The dimensions above given being from a skin, can only be re- 
garded as an approximation; judging from the skull, the present 
species must be much larger than the Sc. annulatus. Its form is 
nearly the same, but the nasal portion is narrower and more elon- 
gated, and the post-orbital processes are considerably larger in pro- 
portion. The dimensions of the skull are as follows :— 
Motilslengtly. . 149s] JEG AAG Ee PRB IEE. OFA LD: 2 14 
Greatest width........ AGS PRIDE PVA EIR 1 24 
Width. betweenvorbitsrs 11.05. 8. 39... PL ed 0 82 
Length from the front of the incisors to the first molar O 7+ 
Tanptiviofipalate jvip. cer ten Jue f. . AY 0 104 
Longitudinal extent of the four molars ........0... 0 5 
Eength ‘of masal bones) 23! 28200 600199, WO WI GO BE 
Sciurus ERyTHROGENYS. Sc. supra rufescenti-fuscus, pilis nigro 
et rufescenti-penicillatis ; genis rufis; guld, corpore subtis, et 
artubus interne albis ; caudad quam corpus breviore, nigrd, albo- 
penicillatd, pilis ad basin rufescentibus ; auribus parvulis. 
une. lin. 7 
Longitudo ab apice rostriad caude basin.... 8 6 
COUT SS ale tats cvaceis tata oka ix Sanaa: <eel MREES 
— tarsi digitorumque .......4... 1 103 
——— ULI WIE. 2 IPI ORION BIR 0 4 
Hab. in Insula Fernando Po. 
The bright rust-coloured cheeks, combined with the pure white 
colour of the under parts of the body and inner side of the limbs, 
will serve to distinguish this species. The fur is rather short and 
moderately soft, and on the upper parts of the body the hairs are 
black (inclining to greyish at the base) and broadly annulated with 
rich rusty yellow at or near the point. A shortish longitudinal pale 
mark is observable on each side of the body near the shoulders. 
The feet are finely pencilled with black and yellowish white. The 
tail is rather short and not very bushy, above black and rather spa- 
ringly pencilled with white; upon separating the hairs, however, 
they are found to be of a pale rust-colour near the base, and along 
the mesial portion of the under side the tail is of a bright rusty red 
colour. The tarsus is naked nearly to the heel, but on the heel are 
a few hairs. 
Mr. Fraser’s collection also contained a perfect skin of the Anti- 
lope Ogilbii, an animal originally described from an imperfect speci- 
men by Mr. Waterhouse in the Society’s Proceedings for May 1838, 
p- 60. 
This animal belongs to the same division as the A. sylvicultrix of 
authors, and is apparently equal to that animal in size. As in the 
species just mentioned, the muzzle is naked, and the horns are placed 
far behind the eye ; they are short, straight (or nearly so) and pointed. 
