OF THE SUMATRAN RHINOCEROS. 139 
the anterior end of the cecum, and immediately makes a short sigmoid 
curve to the right. Its interior is lined with a smooth, simple, irregu- 
larly plicated epithelium, the folds of which are quite removed when 
the organ is distended. 
From the ileo-cecal valve to the anus is 16 feet ; and in its broadest 
part the colon is 39 inches in circumference. It is peculiar that, as 
in the Horse and also in the Tapir, the tube is of very different dia- 
meters in its different parts, the bend of the colic loop being very 
narrow in comparison with its main parts. 
The proximal 7 of the colic loop is sacculated, and, at its middle, 
13 inches in diameter; but at its bend, where it is situated in the left 
iliac fossa, it is much smaller, being only 6} inches across, and not the 
least sacculated. It continues thus uniform on its surface, and 
gradually dilating for about 24 feet till in the epigastric region it 
again becomes sacculated and very capacious, reaching a diameter of 
Fig. 6. 
SS 
. _ Superior view of the colon of C. sumatrensis. 
si, small intestine ; ce, cecum ; c.l, colic loop, with the tranverse colon between 
it and the excum. 
