PLATE III 



Figs. 1-6. Bougainvillia platygaster (Haeckel). 



Fig. I. Aboral view of stomach with male gonads. St. 1374. x 30. 



Fig. 2. Aboral view of stomach. Medusa buds are developed on the 

 pedicels of hydranths issuing from the corners of the stomach. 



St. 1581. 



Figs. ^-5. Hydranths developed by budding from the corners of the 

 stomach ; medusa buds issuing from the pedicels of the hydranths. 

 The hydranth in fig. 5 has swallowed a copepod. St. 1374. x 65. 



Fig. 6. Medusa buds on a stolon without a hydranth. The stolon, 

 issuing from one of the corners of the stomach, was adnate to the 

 subumbrella. St. 1581. x 65. 



Fig. 7. Pyohoscidactyla ornala (McCrady). Blastostyle with medusa 

 buds; from a medusa taken in Philippine waters by the 'Galathea' 

 Expedition, x 65. 



