

HYDEOZOA. 



53 



H. 



pen, 

 in} 





the 



?ri[ 



p 



5 



e 



ma- 



la 



it 



tent 



that' 





a 



i- 



rei- 

 pe 



of- 



:be; 



remain throughout the winter, and again, on the 

 return of spring, once more assume the aspect of 



ii • • i • XX 7 



Hyd 



Fig. 8. 



Development of Cgrdylophora : — a, gonophore of Cordylo- 

 pkora lacustris, showing embryoes in its interior; b, the same- 

 more advanced, with embryoes escaping from its ruptured ex- 

 tremity ; c, an embryo, in its free swimming condition ; d, the 

 same embryo, having assumed a pyriform figure ; e, the embryo 

 in its attached condition ; /, primitive polypite, developed there- 

 from ; g, androphore of the same Cordylophora, its contents es- 

 caping under pressure ; h, caudate cells liberated therefrom ; i, 

 spermatozoa. (All magnified.) 



