328 CONTRIBUTIONS TO THE ANATOMY OF THE BRACHIOPODA 



about the arrangement of the aHmentary canal, however, of which I 

 can find either no account at all or a very imperfect notice. 



The intestinal canal (figs, i and 2 b, d, e) has an inner, epithelial,, 

 and an outer fibrous coat ; the latter expands in the middle line intO' 

 a sort of mesentery, which extends from the anterior face of the 

 intestine between the adductors, to the anterior wall of the visceral 

 chamber, and from the upper face of the intestine to the roof of the,- 



Fig. 2. The same viewed from behind, the jjedicle having been cut away. The left half 

 of the body and the liver are omitted. (For explanation see under Fig. i.) 



visceral chamber ; while posteriorly it extends beyond the intestine as 

 a more or less extensive free edge. I will call this the mesentery (/). 



From each side of the intestinal canal, again, the fibrous coat gives 

 off two ' bands,' an upper {g), which stretches from the parietes of the 

 stomach to the upper part of the walls of the visceral chamber, 

 forming a sort of little sheath for the base of the posterior division 

 of the adductor muscle, which I will call the gastro-parietal band ; 

 and a lower, which passes from the middle of the intestine to the 

 parietes, supporting the so-called ' miricle! I will call this the ilio- 

 parietal band {Ji). 



The ilio-parietal and gastro-parietal bands are united by certain 



