Fig. 183. Diagrams of reproduction in the Polychaeta. A-D, Syllidae. 

 E, Eunicidae. A, Syllis with the posterior region forming a reproductive in- 

 dividual. B, Autolytus with a chain of reproductive individuals budded off 

 successively from pr.r. a proliferating region. C, Trypanosyllis gemtfiipara, 

 longitudinal section through the end of a budding stock showing two kinds 

 of reproductive individual, rs. a single individual which contains al/, the 

 continuation of the alimentary canal (al.) of the stock, and rs/ successive rows 

 of individuals without alimentary canal formed from the proliferating 

 cushion, pr.r. D, Syllis ramosa, showing branching of the asexual stock and 

 budding of reproductive individuals, r.s., r.s.\ from parapodia of the stock. 

 E, Diagram of the swarming of the Palolo worm, Leodice. a, mature female 

 protruding posterior end from its burrow ; b, male — the sexual part of which 

 has just become detached ; c, sexual fragments swimming up to the surface 

 and dy discharging the eggs and sperm. In e they are emptied and sink to the 

 bottom;/, parent worm regenerating the sexual region. 



