438 . Comparative Anatomy of 
junction of the small intestine 1 in. (Fig. 2 :) length of the sto- 
mach (Fig. 1) * inflated, 5J in. ; diameter at the junction of the 
oesophagus, which is the greatest, 3^ in. ; length from the cesopha- 
gus to cerebral extremity, 2 inches. 
Upper jaw, molars 8 ; incisives 4 ; canines 2. Lower jaw. mo- 
lars 10; incisives 4; canines 2. 
The posterior molars in the upper jaw were just making their 
appearance ; in other respects, the dentition agreed with that given 
of the genus Cercocebus in tf F. Cuvier Dents des Mammiferes." 
Vertebrae, cer. 7 ; dor. 12 ; lum. 8 ; sac. 2 ; caud. 20, some of the 
latter, probably two or three, were wanting Ribs, true, 8 j false, 4. 
Length of ulna, 5| in., of humerus, 5 T ^ in., of femur, 5% in., 
of tibia, 5 in. 
CERCOCEBUS PULIGINOSUS, Geoffroy. 
White-eyelid Monkey, Penn. 
The specimen was a young female. The teeth were not all de- 
veloped, and the white on the eyelids, so remarkable in the adult, 
was not clear or well defined. In other respects it agreed with the 
description of authors. 
Length from the nose to the root of the tail, 1 foot 3| in. ; length 
of the tail, 1 foot 6 in. : length of the intestinal canal from pylo- 
rus to anus, 10 feet 9 in. ; length of rectum, 2 feet 9 in. : dia- 
meter of the kidney, 1 in., length 2 in. ; liver five-lobed. 
In the peritonaeum were numerous entozoa, about 30 in number. 
Diameter of the small intestine 1 in., above the ccecum, 7 T \y ^ n - '> 
diameter of the rectum, 1 in., below the coecum, 1| in ; length of 
ccecum, 1 ^ in. ; length of the stomach (Fig. 4) when inflated, 4f in. ; 
diameter at the junction of the oesophagus, which is the greatest, 
2f in. ; oesophagus inserted about one-third of the whole length 
from the cardiac extremity. The ccecum, and the adjoining parts 
* The dotted lines indicate the direction in which the dimensions have been 
taken. 
