HAPLODONTIDA—VISCERA OF HAPLODON RUFUS. 587 
cesophagus enters at the notch. On inflating the organ, the elongated taper- 
ing cardiac extremity curls like a horn around to the right, and comes in 
apposition with the pyloric end, when the stomach appears doubled on itself; 
in fact, the two ends pass each other for an inch or more. The greater 
curvature of the stomach is then nearly circular, the line of the short upper 
border being a spiral. The cardiac end tapers gradually to a blunt, rounded 
extremity; the pyloric portion is much shorter; there is a well-marked 
pyloric constriction near the end. The organ may be distended to measure 
about eleven inches around the greater curvature, with a maximum diameter 
of three inches and a depth of two. The pyloric portion of the stomach is 
thicker-walled than the cardiac prolongation, and, as well as can be deter- 
mined with a hand-lens of low power, much more highly glandular; the 
lining of the cardiac compartment being similar apparently to that of the 
cesophagus. I observe no fold of membrane to constitute a pyloric valve, 
though there is a constriction of the whole organ, apparent from the outside, 
close by the pyloric end. 
When the convolutions of the small intestines are straightened out 
without undue stretching, and the bowel is moderately distended, this 
portion of the digestive tract measures about six feet in length, with a 
uniform calibre of half aninch or more. There is no distinction of duodenum, 
jejunum, and ileum. The ducts of the pancreatic and hepatic secretion 
pierce the intestine close to the stomach; the latter duct about an inch from 
the pylorus. The ileum pierces the colon at a right angle. A circular fold 
of mucous membrane forms a valve to guard the entrance. 
There is an immense cecum, at least a foot long, and very capacious. 
In its most dilated portions, about the middle, a section of it equal to the 
stomach in length would contain quite as much as the latter. The extremity 
tapers, ending bluntly, without a vermiform appendage (very naturally). 
This portion of the alimentary canal makes several convolutions when 7 
situ ; it is sacculated throughout, or with alternate constrictions and dilata- 
tions, like the human colon. 
The length of the remainder of the digestive tube is about five feet,* 
measured as already said. This portion of the canal presents no distinction 
of colon and rectum. It is of uniform calibre throughout, or nearly so, and 
not much more capacious than the small intestine—perhaps half as much 
*Making the total length of the intestinal tract about eleven feet. The animal being about 
foot long, it follows that the intestines are about eleven times as Jong as the body. 
