1902 - 3 .] Abdominal Viscera of Cercocebus fuliginosus, etc. 509 
the observations of these writers, as well as of others, it came to 
be recognised that the stomach in many, if not all, primates was 
of a compound nature. This conception of a bi-partite primate 
stomach has now given place to one in which the viscns is held to 
consist of three parts ; and there seems little reason to doubt that 
in all primates, with the possible exception of the lemurs, a tri- 
partite stomach exists. The Lemnroidea in this, as in other 
anatomical details, appear to stand somewhat apart from the 
Anthropoidea ; though there may be indications of a compound 
stomach even in this group, for Patten (8), describing the 
abdominal viscera of Lemur varius examined after hardening 
in situ , speaks of the organ as being ovoid, but with a pylorus of 
considerable length and bent sharply on the fundus. 
Additional evidence has been recently afforded in a paper by 
Keith and Wood Jones (9). These observers have re-examined 
the stomach of Semnopithecus , and assert that it consists of three 
sharply differentiated and highly specialised compartments, which 
are already demarcated before birth. These three chambers are 
a fundus (saccular in form), a body, and a pyloric part, the two 
latter being tubular. The pyloric part is further subdivided into 
an antrum pylori and a pyloric canal. This condition was also 
found to obtain in the stomachs of Anthropoids, and also, to a 
lesser degree, in that of lower forms (especially in Mycetes). 
Further interest attaches to the short paper by these writers from 
their observations on the development of the fundus of the 
human stomach. In man, they say, the fundus does not develop 
as a general expansion of the gastric part of the fore-gut, but in 
the form of a localised out-growth or diverticulum from the 
cardiac end of the greater curvature of the stomach. This diver- 
ticulum appears to be best marked in human foetuses of the 3rd 
or 4th month. This discovery, combined with the recognition by 
human anatomists of a pyloric canal, brings the stomach of man 
well in line with that of the other primates, and so tends to 
establish more firmly the tri-partite nature of the primate 
stomach. 
In the stomach of Cercocebus there can be little doubt as to the 
identity of the saccular portion with the fundus of Semnopithecus , etc. 
Nor is it difficult to conceive that the slight dilatation close to the 
