TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Proboscis ' 

 sheath 



Bothr/dial 

 Sucker 



Prbboscidial nerve 

 ■ In fern I nerve cord. Sxcrefory canal 



Figs. 1 and 2. Coenomorphus linguatula. 



1. Diagrammatic transverse section through theScolex showing the 

 arrangement of the muscles. The muscular parts of the bothridia and 

 the dorso-ventral muscle commissure connecting them are darkly 

 shaded. The muscle bundles radiating out towards the periphery are 

 represented as if they were projected in a single plane : in reality 

 they run obliquely. (See PI. I, fig. 5, which is an actual representation 

 of the muscle fibres seen in one section some little distance behind the 

 transverse level taken as represented in the Text-figure). The numbers 

 of fibres drawn are in all cases less than those actually seen in the 

 sections. 



2. The axial parts of the Scolex some distance behind the central 

 nervous system. The coarse connective tissue between the proboscis 

 sheaths ; the proboscidial nerves, and the lateral nerve cords are 

 shown. The lateral nerve cord on the right side is seen giving off 

 branches to the bothridial suckers. 



