BUDDING OF ANNELIDS. 



315 



in the fresh-water worm Nais, also in SylUs and Myrianida, 

 as well as in Fdograna, Protula, 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 



Pis. 160. 



Pis. 161. 



Pig. lSO.—ClymenM!a torquata.— Alter Verrill. 



¥\g.l5l.—AmphUHIe cirrata, enlarged twice, b, branchia ; c, iincini, enlarged 5QC 

 QiameterB. — After Mulragreu. ° 



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 SylUs and allies certain long, slender processes of the 



