102 



MANUAL OF ZOOLOGY 



SECT. 



but these are always detached sooner or later, so that a 

 permanent colony is never formed. There are no special 

 reproductive zooids, but simple ovaries (ovy.) and testes 



(spy.) are developed, the former nearer the proximal, the 

 latter nearer the distal end of the body. 



In nearly all the remaining Hydrozoa that do not form 

 colonies the form assumed is not that of the polype, but that 



