504 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
into the stomach and also into the intestine. Like the 
intestine, the inner wall of the caecum is not covered by 
any chitinous lining. It acts as a reservoir simply for the 
hepato-pancreatic secretion, and no food of any kind was 
recognised therein. | 
The Intestine.—Leaving the stomach, this long, 
thin-walled, and slender organ, after running between 
the two hepatic ducts, before their fusion, curves ventrally 
upwards over the liver, over the ventral surface of which 
it runs, curving first to the right, then in again to the 
left, and then anteriorly to the anus. Just before it 
reaches the anus, the ink duct enters the rectum by an 
aperture at the tip of a small papilla on its dorsal wall. 
The anus has a dorsal and a ventral lip, and bears two 
small leaf-shaped appendages or “ ears” laterally (PI. IV, 
fig. 29). The internal wall of the intestine is ridged, the 
two most prominent ridges being continued up from the 
columellar ridge of the spiral caecum. In the initial 
part of the intestine, the food which has been in great 
part digested in the stomach is mixed with that portion 
of the hepato-pancreatic fluid which enters this organ. 
Hence digestion is completed here. The chief process, 
however, occurring in the intestine is absorption of the 
now digested food. Towards the rectal end of the 
intestine, waste matter of a dull orange tinge collects. 
Digestive Gland.—'This large oval gland, although 
often called the liver, does not secrete a fluid at all 
comparable to the bile secreted by the liver of vertebrates. 
It occupies almost the whole of the visceral sac, and lies 
ventral to the crop and oesophagus. Although in Eledone it 
consists of one lobe only, the paired ducts and the analogy 
with the Decapods indicate a fusion of two originally 
distinct glands, which were situated laterally to the gut. 
The ink sac lies in a deep groove excavated on the ventral 
