1895.] 



ANL BRAIN OF DEIfDEOLAGTJS BEIWETTI. 



133 



there is a single band on the side opposite to that at which the oeso- 

 phagus enters ; it dies away entirely after a course of about fi\e 

 inches. On the opposite side of the cardiac ad-de-sac, but a little 

 way from the actual extremity, two bands form a U-shaped junction. 

 Traced backwards, one of these two bands (that on side remote 

 from entrance of oesophagus) has a very short course, but it nearly 

 joins the strong lateral band of its side to which reference has 

 already been made as extending right along the stomach as far as 

 the pyloric end. The other loop of the U forms the strong band 

 on the opposite side of the stomach. The interior of the stomach 

 shows a \ ery great contrast to that of Petrogale penicilJata, with 

 which I compared it. In the latter the entire cardiac end of the 

 stomach is lined with a whitish epithelium continuous with that of 

 the oesophagus. In Dendrolagus it is not ; but the middle tract 

 of the stomach leading from the oesophageal opening towards, but 

 not as far as, the pylorus is lined Mith this epithelium. Round 

 this, on both sides, there are patches of follicular glands of varving 

 size, the largest being about half an inch long. 8ir Richard Owen 

 mentions these, and also two strong folds which start from either 

 side of the oesophageal opening and run parallel with each other 

 for a distance of about 3 inches towards the pylorus. The upper 

 of these is faintly represented in Peiror/ale. There are also (in 

 Dendrolar/us bennetti) two folds which run downwards from the 

 cardiac side of the oesophageal orifice and diverge from each other 

 to form a V. They appear to form a kind of valve partly shutting 

 ofE the cardiac nd-de-mc. They are also, though faintly, repre- 

 sented in Petror/ale ixnicUlata. The stomach of Ilalmaturus (fig. 2) 

 is somewhat intermediate. It has the strong folds round the oeso- 

 phageal orifice, but no patches of glands. 



Fig. 2. 



Stomach of Halmaturits, with the interior displayed. 

 o, oesophageal orifice. 



The spleen is 6| inches in length ; it is narrow, but dilated in a 



