PLATE XVII. 



Illustrating paper of N. E. Harrington, pp. 214-222. Drawn by the author. 



Fig. 1, 2, 3. Parapodia of 10th, 20th, 30th somites Nereis cychirus, n. sp. 

 epitocous Nereis 9 • 



Fig. 4, 5, 6. Parapodia 10th, 20th, 30th somites N. cyclurus, n. sp. ato- 

 cous Nereis form sexually immature. 



Fig. 7. New bristle from epitocous Heteronereis form N. cyclurus. 



