igo7-] Records of the Indian Museum. 205 



evident, however, that in the ponds the pol3^ides cease to be active 

 and produce brown bodies during the hot weather. In colonies 

 taken from their natural habitat in July, during the floods referred 

 to at the beginning of this paper, only a few zocecia were active, and 

 these few appeared from their transparency to have recently been 

 rejuvenated. In the majority of the zooecia new polypides were in 

 the course of development from brown bodies, the tentacles in most 

 cases being already visible as short digitate processes. On the walls 

 of zooecia containing tentacles in this stage of rejuvenescence the 

 gonads were already almost mature, both ovaries and testes being 

 already far advanced and occurring together. 



An interesting observation, possibly connecting the formation 

 of brown bodies with that of the resting buds of the Paludicellidse, 

 was made as regards some of these zocecia, namely that their walls 

 were greatly thickened and had a brownish or greenish colour not 

 due to the presence of minute organisms. Other zooecia, however, 

 in which thepolypides were in exactly the same condition, resembled 

 the empty zooecia of Victor ella at the same time of the year, having 

 thin walls and the collar protruding from their distal extremity. 



