742 DR. J. MURIE ON SPECIES OF [Dec. 12, 
not quite greyish, but rather of a dirty-brown colour; hair of the 
cheeks also of the same shade, some of them black and not greyish ; 
iris yellowish brown, pupil dark blue. 
The following are the dimensions, as taken after death :— 
inches 
Length, body, back of neck to root Ofetail. wee 11 
i Ma Mies atte eee tothe Serenata 223 
, head, muzzle to occiput .............- 63 
, head, muzzle to base of ear in straight line 3 
, head, across cranial vault to meatus 54 
, arm, shoulder-joint to wrist .......... 84 
———., palm of hand to tip of fingers.......... 34 
, leg, trochanter toankle .............. 94 
= , sole of foot, heel to tip of third toe...... 5 
———,, ear, from above downwards............ l 
1 
cy 
, ear, from before backwards............ q 
Post-mortem examination disclosed death to have been caused by 
tuberculous disease, which affected the peritoneum, intestines, spleen, 
portions of the left kidney and stomach, which were partly aggluti- 
nated together, preventing a minute anatomical investigation of these 
organs ; but the stomach to all appearance seemed simple, and with- 
out the sacculi peculiar to Semnopithecus and Colobus—so far, there- 
fore, distinct from either of these genera. 
I have compared the skull of the adult type specimen of Presbytes 
albigena with the series of crania in the British Museum of Semno- 
pitheci, Colobi, Cercocebi, &c.; and the following are my notes re- 
specting them :— 
The cranium of P. albigena is altogether longer than that of either 
of the two species of Semnopithecus, S. melalophus and 8. obscurus, to 
which it bears resemblances outwardly, this length being in great part 
due to the elongation of the face, especially the maxillary and inter- 
maxillary bones. The upper incisors are also in a more horizontal 
plane. ‘The greater backward extension of the parietal and occipital 
region also helps to increase the antero-posterior diameter. This 
difference is best seen in profile. Looking downwards upon the 
vertex, the parietal region in P. albigenais broader, and at the sagittal 
suture higher than in S. melalophus and S. obscurus. On the con- 
trary, in these two species the frontal region appears higher than in 
P. albigena, by reason of the parietal flattening in them; their 
skulls are also more compressed laterally. In P. albigena the zygo- 
matic arches are placed nearly in two parallel lines with the sides of 
the skull; but in S. obscurus, S. melalophus, and other Semnopithect 
they are considerably arched. 
In these several cranial differences P. albigena corresponds to 
Cercocebus ethiops and CO. fuliginosus, which possess these cha- 
racters. e 
In every one of the skulls of the species of Semnopithecus in the 
British Museum the orbits are comparatively wider, rounder, and 
more staring than in P. albigena, which agrees with the Cercocebi in 
