Notes on some Hyclromedusae troni the Bay of Naples. 585 



Fig. 28. Single hydranth of same. more highly magnified, showing medusa buds 



at ni. 

 Fig. 29. Medusa of G. implexa, greatly enlarged, showing general shape of 



medusa, aspect of tentacles, stalked nematocj'st capsules, etc. Only 



one tentacle drawn complete. 

 Fig. 30. Section of Qgg of Conjdcndriinn in early phase of cleavage. 

 Fig. 31. Section of early embryo of Corydendriuni, with ectoderm, ect. Un- 



differentiated entodermal mass enf. comprising the center. 





