Lewis. — Nervous Syst. Polychaeta. 



PLATE 8. 



I*igs. 66, 67. Diagrams of portions of nerve cord in Cli/mene proditrta. 



Fig. 66. Nerve cord in the anterior part (about f ) of segment 5, showing the 



lateral nerves, giant cells, and Leydig's fibre. X 40. 

 Fig. 67. Nerve cord in the anterior part (about |) of segment 3. X 40. 

 Fig 68. Diagram showing distribution of sense organs of right half of the first 



four segments of Axioihea torquata. 



