196 



THE EVOLUTION OF SEX. 



statoblasts may further resemble sponge-gemmules in elaborateness of 

 external equipment, a common characteristic of passive resting structures. 



A Sea-worm {Mynajiida) which has budded off a chain of ndividuals. — After 

 Milne-Edwards. 



In the higher bristle-footed worm-types (C//^/(7/(?r/a), asexual multiplica- 

 tion occurs in great variety of expression. Some, when alarmed, break up 



Syllis ramosa, a. ringed marine worm, in which asexual multiplication has pro- 

 duced a branched appearance. — From M'Intosh, " Challenger " Rep. on 

 Annelida. 



