ANATOMY OF THE EARTHWORM. 



147 



c 'a c 



Fio. 85. 



FIG. 85. Diagram of the ventral surface of the body cavity of the 

 eighth to twentieth segments of the earthworm. (Drawn by W. K. 

 Brooks. ) 



8, 9, 10-26. Body cavities of the segments. a. Nervous system. 

 b. Nerves from ganglia, c. Nerves from commissures, d. Diaphragms 

 between the segments, e. Receptacula seminis. /. Testes. fir. Vesicula 

 seminis. h. The opening of the vasa defercntia, represented as seen 



