finest 



dcrs.vess 





vent rvss - 

 72ft <x>~ 1 



FIG. 103. Nereis dumerilii. Semi-diagrammatic view of the anterior portion of 

 the body, with the dorsal body-wall removed, so as to show the alimentary canal, 

 the septa, the blood-vessels and the nephridia ; a portion of the intestine removed 

 so as to show the ventral blood-vessel and nerve-cord which lie below, dors. ves. 

 dorsal vessel ; gl, oespphageal glands ; int. beginning of intestine ; ne. co. nerve 

 cord ; neph. nephridia ; ces. oesophagus ; palp, palp ; para, parapodia ; perist. 

 peristome ; perist. tent, peristomial tentacles ; ph. pharynx with its jaws ; prast. 

 prostomium ; vent. ves. ventral vessel. 



Man. Zool. O 



