Mater. — Tortugas Medusae. 



PLATE 10. 



Fig. 20. Oceania gelatinosa, nov. sp. 



Fig. 20^. " " Otocyst. 



Fig. 21. Phortis pyramidalis = Eutima pyraniidalis, L. Agassiz. 



Fig. 21^ " " Portion of bell margin. 



