MR. R. OWEN ON THE STOMACH OF SEMNOPITHECUS. 67 
The extremity of the cardiac division is thus slightly indented, reminding one of the 
similar but more marked division of the same part of the stomach in the Kangaroo, 
which in other respects bears so strong a resemblance to the present. 
The length of the cardiac division is 3 inches ; its greatest diameter, 3 inches 4 lines. 
The second or middle compartment of the stomach is composed of a double series of 
sacculi of different sizes, puckered up upon the longitudinal band above mentioned. 
Some of these sacculi have a diameter of 3 inches, others of 1 inch. They are 
formed principally at the expense of the anterior parietes of the stomach, and are eleven 
in number. The septa, by which they are divided from each other, are of a semilunar 
form, and project into the cavity of the stomach to the extent of half an inch, and 
a few to that of an inch. 
The length of this part of the stomach, in a straight line, is 5: inches ; its greatest 
diameter, 5 inches. 
The third or pyloric division of the stomach commences a little to the right of the 
esophagus, where the second longitudinal band begins. It is a narrow and almost 
cylindrical canal, gradually diminishing in diameter to the pylorus, bent in a sigmoid 
form, and terminating by making a complete turn upon itself. It is only this part of 
the stomach which is puckered up on the two bands above described. The sacculi thus 
formed are, however, by no means so large or so completely separated from each other 
as in the preceding division; and they become gradually less distinct to within 5 
inches of the pylorus, where they cease altogether. A similar gradual disappearance of 
the sacculi is observable in the stomach of the Kangaroo. 
The whole length of this division, taken midway between the two curvatures, is 
1 foot 6 inches ; its greatest diameter is 2 inches; its smallest diameter, 1 inch. 
In considering this stomach as being made up of three principal divisions, I must 
not be understood to suppose them as being equally distinct with the different cavities 
of a ruminant or cetaceous stomach: they are not characterized by any essential dif- 
ference of structure, for none of them possess a cuticular lining. The three divisions 
are, however, sufficiently obvious to justify their separate consideration for the facility 
of the description of so complicated an organ. 
In another species of Semnopithecus, Semn. fascicularis, (the Croo of Sumatra and 
Semn. comatus of M. Desmarest,) the stomach presented precisely the same structure as 
the preceding. Its dimensions were not, however, quite so large in proportion to the 
size of the animal. The individual examined was younger than the Entellus, the stomach 
of which has just been described. 
From the disproportionate size of the stomach in these animals, some differences are 
met with in the disposition of the other viscera of the abdominal cavity. The liver, 
instead of crossing the epigastric to the left hypochondriac region, extends downwards 
from the right hypochondriac to the right lumbar region; the whole of the opposite 
side of the abdomen, with the epigastric region, being occupied by the enormous sto- 
K 2 
