PLATE VII 



Fig. I. Cumna diiplkata Maas. Part of umbrella-margin of a specimen 



29 mm. in diameter, showing development of gastric pouches, 



lappets and tentacles. St. 100. x 7. 

 Fig. 2. Ciuuna duplicata Maas. Statocyst with otoporpa. x 250. 

 Fig. 3. Two clusters of larvae of 'i Pegantha tiiluha Haeckel attached to 



the suhumbrella of Bougainvillia phUygaster (Haeckel). St. 680. 



X25. 

 Fig. 4. Larva of ? Pegantha triloba shortly before liberation, aboral view, 



showing radiating edges and otoporpae ; from Bougainvillia platy- 



gaster. St. 683. 

 Figs. 5-7. Clusters of larvae, probably of Ctinina pcirgnna Bigelow, 



from Rhopalonema velatum Gegenbaur. X35. Fig. 5, St. 250; 



fig. 6, St. 254; fig. 7, St. 679. 

 Fig. 8. Larva of Narcomedusae in advanced stage of development, 



from Rhopalonema funerarium ^'anh6ffen. St. 2059. x 25. 



Fig. 9. Part of umbrella margin of the same, showing a peronium and 



four marginal clubs with otoporpae. x 350. 

 Fig. 10. Cluster of larvae of Narcomedusae, from Pantachogon haeckeli 



Maas. St. 85. x 25. 

 Fis. II. Newlv liberated medusa of the same. > 25. 



