BUDDING OF ANNELIDS. 



215 



in the fresh-water worm Nais, also in Syllis and Mymanida, 

 as well as in Fdograna, Protida, etc. Autolytus, a com- 

 mon worm on the coast of New England, produces one gen- 

 eration by budding (parthenogenesis). There is, in fact, an 

 alternation of generations, an asexual Autolytus, giving 



FIG. 150. 



FIG. 151. 



Fig. 15Q.ClytntneZla torqvata After Verrill. 



Fig. l&l.Ampfiitrife cirrata, enlarged twice, b. branchia ; c, uncini, enlarged 50C 

 diameters. After Mulmgreu. 



rise to a brood of males and females, the sexual and asexual 

 forms being so unlike each other as to have been mistaken 

 for different species and even genera. 



In Syllis and allies certain long, slender processes of the 



