CALYCOPHORID^. 



127 



has been met with at Porta della Praya and at San Yago, one of the 

 Cape de Verde islands. 



The colony of Praya diphyes presents two great locomotive bell- 

 shaped masses, between which the common stem is suspended. 

 This cylindrical stem, which is thin and transparent, carries on it at 



Fig. 42. — Praya diphyes (Blainville). 



intervals, certain groups very exactly circumscribed and individualised. 

 Each of these groups consists of a nursing polyp, having its fishing- 

 line with a special floating air bladder, a reproductive bud male or 

 female, and a protecting bract enveloping the whole. 



