MR. E. T. BENNETT’S ACCOUNT OF MACROPUS PARRYI. 299 
when erect upon the tripod of the hinder legs and tail. The abdominal muscles are 
seen in violent action for a few seconds ; the head is a little depressed; and then the 
cud is chewed by a quick rotatory motion of the jaws. This act was more commonly 
noticed after physic had been given to the animals, which we may suppose to have 
interrupted the healthy digestive processes ; it by no means takes place with the same 
frequency and regularity as in the true Ruminants. 
“The disposition and structure of the intestinal canal corresponded to that of the 
greater Kangaroo, in an adult specimen of which I measured carefully the intestines, 
and found the length of the small intestines 22 feet ; of the large intestines, 9 feet ; of 
the cecum, 1 foot 10 inches: in Macr. Parryi the small intestines measured 9 feet ; the 
large intestines 4 feet ; and the cecum 9 inches. The different segments of the canal 
have consequently nearly the same relative proportions ; but the whole are shorter in 
proportion to the body than in the greater Kangaroo. 
‘There were several glandular patches in the ileum; the villi of this gut, viewed 
under the microscope, were thickly set, moderately long, and compressed, as in the greater 
Kangaroo. In the large intestines the mucous surface was devoid of villi, but presented, 
when magnified, a very fine reticulation. In the greater Kangaroo two longitudinal 
bands commence about one third of the distance from the end of the c@cum, and con- 
tinue for about 2 feet along the colon, when they gradually spread over the gut and dis- 
appear ; very faint traces of a similar structure were perceptible in Macr. Parryi: but 
in neither species do these bands draw up the intestine into pouches ; nor is the cecum 
or colon dilated to serve as a reservoir, the stomach here serving for the necessary ac- 
cumulation and retention of the vegetable substances. In Semnopithecus, however, the 
colon is sacculated as in other Quadrumana, notwithstanding the complicated structure 
of its capacious stomach. I have observed in the greater Kangaroo that the contents of 
the cecum are very soft, and so continue along the colon to the ends of the two longi- 
tudinal bands, beyond which they begin to be formed into cubical lumps about an inch 
square, with the margins rounded off. 
‘<The liver in Macr. Parryi was situated wholly to the right of the mesial plane, as 
in the Ruminants, and from a similar cause, viz. the preponderating size of the stomach, 
which, with the spleen, fills the left hypochondrium. It presented the same form as in 
Macr. major, being more or less deeply cleft into five lobes exclusive of the Spigelian 
appendix or lobulus. The latter is not continued in the Kangaroo from the right lobe of 
the liver, as in most other Mammalia, but is a process of the left lobe, on account of 
the position of that part of the lesser curvature of the stomach to which it is adapted. 
«The gall-bladder does not perforate the liver, as in the Opossum, but occupies a 
deep fissure, its fundus in both genera, however, projecting from the convex surface of 
the gland. 
“The terminal portion of the ductus choledochus was surrounded and thickened by 
the same glandular structure in Macr. Parryi as in Macr. major ; and was similarly 
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