POL YZOAN COLONIES. 2 5 I 



like connection (Clavelina) ; but those in which the 

 individuals form star-like masses go by the name of 

 Botryllus. This really signifies a bunch of grapes, 



Fig. 184. 



Membranipora pilosa, encrusting sea- weed. 



and is an allusion to the way in which the individual 

 members of a Botryllus colony are related to each 

 other, just as the grapes on the same bunch are. 

 Each "ray" of a "star" (Fig. 186) is a separate 



