Mates. — Tortugas Medusae. 



PLATE 4. 



Fig. 8 Gonionemoides geophila, nov. gen. et sp. Side view of adult medusa. 

 Fig. 9. " " Medu.sa with oral surface upward, and holding 



fast to the bottom of the aquarium by means of the adhesive suckers 



upon its tentacles. 



