Mayee. — Tortugas MeJus*. 



PLATE 28. 



Fig. 93. Diphyopsis campanulifera, Chun. Side view of mature animal. The 

 posterior swimming-bell has been lost through accident. 



Fig. 94. Diphyopsis campanulifera. Enlarged view of the proximal portion of 

 the siphosome. {ps) place of origin of the large posterior swimming- 

 bell that has been lost through accident; (as) small " reserve" swim- 

 ming-bell ; (/)) feeding-polypite ; (t) tentacle; (cs) covering scale, or 

 bract ; {b) immature swimming-bell (shown mature in Fig. 96, h). 



Fig. 95. Diphyopsis campanulifera. Tentacular nematocyst battery. 



Fig. 96. Ersaea Lessonii, Chun. The monogastric, sexual generation of D. cam- 

 panulifera. (I>) swimming-bell ; (cs) apical bract, or covering scale ; 

 (o) gonophore. 



Fig. 97. Ers%a Lessonii. Young 9 gonophore containing two ova. 



