of the Ornithorhynchus paradoxus. 77 
The omentum is a thin transparent membrane, without any 
fat in it, originating from the side of the stomach next the 
duodenum, and also from that intestine anteriorly: on the left 
side it hangs loose, and the spleen is connected to it ; but, on the 
right, after it reaches the gplon, it surrounds that gut, and re- 
turns to the spine ; so th^^afthough the colon is confined by 
the omentum, there is no part of that membranous bag pro» 
jecting beyond it. pfT 
The liver is composed ^pj|ur lobes, besides the small lobe 
or Iobulus Spigelii. The gtiil-bladder is in the usual situation, 
and of the common size. > The cystic and hepatic ducts unite 
into one, and are joined by^^- pancreatic duct before their ter- 
mination in the duodenurg||j^ich is about an inch from the. 
pylorus. 
The pancreas is spread upon the great and little omentum-, as 
in the sea-otter, and is made up of small parts, in a very similar 
manner. |M 
The spleen consists of tjjfevery long slender bodies, united 
together at one end for the||l|gth of half an inch : one of these 
portions is six inches, the other four inches long. 
The kidnies are conglobate, and lie in the usual situation. 
The capsulae renales are raSte Small. The ureters are pellucid 
and small 
The urinary bladder is not situated in the pelvis, but just 
above it, in the cavity of the abdomen, and is attached to the 
peritonaeum lining the abdominal muscles. 
The skull is rather flattened upon the upper surface : its 
cavity is capacious ; and there is a bony process projecting from 
the cranium, in the place of the falx of the dura mater. This, 
I believe,, is not the case in any other quadruped : it is met with.. 
