1902-3.] Abdominal Viscera o/Cercocebus fuliginosus, etc. 519 
very inconstant, it being encountered in three out of twenty -four 
foetal livers, and in two out of nine adult organs. Whether there 
is any very important morphological significance attached to this 
fissure is not very clear ; but we shall see later that it is possibly 
represented in Lagothrix. 
The only lobe of the liver of Cercocebus that seems to require 
special description is the caval ( lobus vence cavce , Ruge). For the 
others it will suffice to say that the left lateral is the most 
independent, and the right lateral the most voluminous. The 
rl" ad 
omental lobule (Spigelian lobe) of the caval lobe is largely 
developed, and consists of two closely connected portions — a dorsal 
and a ventral. The dorsal part can be seen when the liver is 
viewed from the cephalic aspect, and is remarkable for having a 
pointed projection jutting out towards the right (figs. 1 and 2). The 
ventral portion of the omental lobule (tuber papillare) is tongue- 
shaped, comparatively free, and, when the viscera are in their 
natural position, in contact with the lesser curvature of the 
stomach. It is marked off from the dorsal portion by two 
