300 MR. E. T. BENNETT’S ACCOUNT OF MACROPUS PARRYI. 
joined by the duct of the pancreas immediately before penetrating the duodenum, which 
it enters in Macr. Parryi at 3 inches from the pylorus ; and in Macr. major at 5 inches’ 
distance from the same place. A similar glandular structure of the biliary duct is ob- 
servable in some of the Dibranchiate Cephalopods ; but in these the accessory folliculi 
are more developed, and were regarded by Hunter as analogous to a pancreas: the 
true analogue of this gland, however, exists in all the Cephalopods in the simple rudi- 
mental condition which it presents in the lowest Vertebrata. The pancreas in the Ma- 
cropi extends from the spleen across the root of the mesentery to the duodenum ; it 
sends off many branched processes into the posterior part of the epiploon. 
‘The spleen presents a singular figure, which might, at first sight, be supposed to 
relate to the extent and complexity of the stomach. It is a narrow, flattened, T-shaped 
body ; one long strip extends down the left side of the great end of the stomach, and 
a shorter strip goes off at right angles to the smaller end of the stomach, and accom- 
panies a large process of the pancreas. In Dasyurus and Phalangista, however, in which 
the stomach is of a simple form, the spleen is also characterized by a process extended 
at right angles from the longer portion or body of the gland which lies longitudinally 
in the abdomen. Now in these Marsupial genera the superadded process accompanies 
and is in close contact with a corresponding process of the pancreas, as in the Kangaroo, 
but both processes are comparatively shorter. The smaller or transverse portion of the 
spleen was much notched at its anterior trenchant margin in Macr. Parryi: I have al- 
ways observed it entire in Macr. major. 
‘* The kidney in Macr. Parryi presented one elongated mamilla, without the smaller 
accessory ones observable at its sides in the greater species. The situation of these 
glands, and of the suprarenal glands, is the same in both. In Macr. Parryi the kid- 
neys were on the same transverse line, 6 inches above the brim of the pelvis. 
‘<The viscera of the chest were as in Macr. major. The blood of the head and ante- 
rior extremities is returned to the right auricle by two superior vene cave, as in the 
other Marsupiata. 
‘“« The uterine organs presented the same remarkable structure as in the greater Kan- 
garoo, except that the septum of the mesial cul-de-sac of the vagina was not extended so 
low down. Traces of peritoneal canals were carefully searched for, but with the same 
negative result as on former occasions.” 
Prats XXXVI. 
Macropvs Parryt. 
A side view of its teeth is subjoined, chiefly for the purpose of showing the form of 
the third incisor, which differs from that of Macr. major by its smaller extent and by 
the anterior of the two nearly equal portions into which it is divided being destitute of 
groove. 
