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DEPARTMENT OF THE NAVAL 8ERYICE 

 Genus Garveia. 



Trophosome. Colony branched or unbranched; perisarc conspicuous; hydranth 

 fusiform. 



Gonosome. Gonophores borne on brancli-like pedicels; if perisarc covers the 

 gonophore at early stage, it later bursts off, leaving a cup-like expansion around the 

 base. 



Garveia groenlandica Levinsen. 



Trophosome. Stems unbranched or very slightly 

 branched, 8 mm. high ; perisarc wrinkled or sometimes 

 irregularly annulated; perisarc passing over the lov^er 

 part of the body of the hydranth; tentacles 10. 



Gonosome. Gonophores borne on the stolon; 

 pedicels short with wrinkled flap or cup of perisarc 

 around the base of the gonophore. 



No. s. 

 Garveia grownlandica. 



Family BOUGAIKVILLID^, 



Trophosome. Hydranths fusiform or clavate; proboscis conical or dome-shaped; 

 one whorl of short filiform tentacles. 



Gonosome. Gonophores producing free medusae. 



Genus Bougainvillia. 



Trophosonve. Perisarc well developed on the branches as well as on the main 

 stem. 



Gonosome. Gonophores supported on short pedicels; medusae with four radial 

 canals and four clusters of tentacles. 



Bougainvillia carolinensis (McCrady). 



Trophosome. Colony irregularly branched, 30 cm. high ; 

 branches annulated proximally; hydranths with long conical pro- 

 boscis; tentacles 10-12. 



Gonosome. Gonophores singly or in small clusters on stem 

 and branches. 



No. 9. 

 Bougainvillia 

 carolinensis. 



