MACROPUS MAJOR. 253 



therefore the proportion that the intestines bear to the body is greater 

 than in an old one. 



The liver is divided into four lobes besides the lobulus Spigelii, all 

 nearly of equal size, excepting the second from the right, which is the 

 smallest of the four. The whole under surface of the five lobes makes 

 one concave surface. The gall-bladder is in a sulcus of the second lobe 

 from the left, and the falciform ligament is attached to the convex surface 

 of the same lobe, but does not come to the lower or anterior edge of the 

 liver, only a little way on its surface, having no round ligament. 



The pancreas passes to the left towards the spleen, along the root of 

 the mesentery ; and its left end is in the posterior part of the epiploon ; 

 and at this part it is thin and branches out in this membrane like the 

 Dendrites in stone (the mocha stone or pebble). 



The epiploon is not a large and loose membrane covering the intes- 

 tine, but is only loosely continued from the stomach to the transverse 

 arch of the colon. It is attached forwards to the stomach, on the right 

 to the pylorus, and beginning of the transverse arch; below to the 

 transverse arch of the colon; on the left to the diaphragm, to the 

 loins, &c. 



The spleen is in the epiploon. It is one large spleen similar to that 

 in the dog, <fcc, but it has a process, or small spleen, coming out from 

 its side, near the lower or small end, lying in a sulcus of the stomach 1 . 



The kidneys 2 are conglobate, and the cortical substance is but thin : 

 there is one principal mammilla, making a ridge, with several lateral 

 processes running from it, or joining it as in many other animals. 



The Heart. — There is a ' vena cava sinistra.' The lungs on each 

 side are divided at their anterior edges by a fissure ; that in the left 

 side is the deepest, the superior portion of which lung comes forward 

 before the vessels above the heart, the mediastinum at this part being 

 more on the right side than common to other animals : the lobus medius 

 is triangular [three-sided] ; one side is convex towards the left, one is 

 concave in contact with the pericardium, and the third side is concave 

 towards the diaphragm. 



"When the kangaroo is about the size of a plucked thrush, before any 



first permanent molar teeth, was derived : No. 1729, Osteol. Series. In an adult 

 female, Macropas major, dissected by me at the Zoological Gardens, London,— 



ft. in. 



The length of body from snout to vent was 3 3 



The small intestines 22 



The cfficum 9 



The large intestines 2 0.] 



1 [Hunt. Prep. No. 838.] 2 [lb. No. 1228.] 



