BRITISH HYDROIDA. 



Suborder L ATHECATA. 



Tum-LARiNA, Ehrenberg, Corall. des rothen Moeres, 70; Jolinston, Brit. 



Zooph. i. 29. 



CoRYNiD^E (order), Huxley, Oceanic Hydrozoa, 21. 

 TUBULARI.E, Agassiz, N. H. U. S. ir. 338. 

 G-YMNOTOKA (except Hyrlra), J. V. Cams, Handbuch der Zoologie, ii. f>f>0. 



Family I. Clavidae. 



POLYPITES claviform or fusiform, ivith scattered filiform 

 tentacula. 



Genus CLAVA, Gmelin. 



Der. C'lava, a club. 

 CORYNA, Elirenberg, Corall. d. rothen Meeres, 69. 



GENERIC CHARACTER. Polypites clavate, contractile, 

 ivith many scattered smooth tentacula, rising from a filiform 

 stolon, sheathed in a chitinous polypary, which also invests 

 the base of the polypite : reproduction by means of fixed 

 sporosacs, borne singly or in clusters on the body, behind 

 the posterior tentacles. 



B 



