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FORTT-FIETff REPORT ON THE STATE MUSEUM. 



Clistenterata (= Inarticulata and Articulata, respectively). It is 

 believed that in the Articulata the faeces are discharged through 

 the mouth. 



Fio. 125. — Stomach of Magellania austvalis. Fig. 126.— Alimentary canal of Hemithyris 



a, oesophagus; o, stomach; d, e, gastroparie- 

 tal band; /, dorsal vescicle; g, h, blood- 

 vessels; i, dorsal blood-vessel laid open, show- 

 ing O) orifices leading into gastral lacunes; 

 k, hepatic ducts. (Hancook.) 



psittacea. a, stomach; b, intestine; c, imper- 

 forate extremity; d, hepatic ducts; e, dorsal 

 mesentery; /, gastro-parietal bands; g, cen- 

 tral band; h, ilio-parietal bands; i, oviducts; 

 j, dorsal vescicle; 1c, I, vein; m, pallial 

 sinuses. (Hancock.) 



The entire tube is composed of firm tissue divisible into a 

 fibrous outer coat and an inner mucous lining which is 



Fig. 127.— Intestine of Magellania australis. a, upper extremity; b, posterior ceeca 

 extremity; c, portion of oviducts; d, ventral mesentery; c, thickened ridges of mesentery; 

 /, bloodvessel. (Hancock.) 



strongly plaited and wrinkled in the stomach and intestine. 

 Externally it is sheathed by a tenuous membranous coat from 



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