Mayek. — Tortugas Medusae. 



PLATE 28. 



Fig. 9.3. 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. {{>s) place of origin of the large posterior swimming- 

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

 ming-bell; (/*) feeding-poly pite ; (t) tentacle; (cs) covering scale, or 

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



Fig. 95. Diphyopsis campanulifera. Tentacular nematocyst battery. 



Fig. 96. Ersa^a Lessonii, Chun. The monogastric, sexual generation of D. cam- 

 panulifera. {h) swimming-bell ; (rs) apical bract, or covering scale ; 

 (g) gonophore. 



Fig. 97. Ersaea Lessonii. Young 9 gonophore containing two ova. 



