248 BENNITT. 



Clytia johnstoni (Alder). 



Campanularia johnstoni, Alder, 1857, p. 36. 



Clytia johnstoni, Hincks, 1868, p. 143, pi. 24, fig. 1. ^ 



Clytia grayi, Nutting, 1901, p. 344, fig. 23. 



Clytia johnstoni, Fraser, 1912, p. 358, fig. 17. 



Clytia grayi, Stechow, 1914, p. 128, fig. 5. 



Clytia johnstoni. Nutting, 1915, p. 54, pi. 11, figs. 1-6. 



Clytia johnstoni, Stechow, 1919, p. 43. 



This was one of the commonest species on floating Sargassum. The 

 characteristic annulated gonangia were extremely numerous in the 

 specimens collected. In one colony a stolon twice as long as the pedi- 

 cel extended out from the middle of the pedicel, establishing connec- 

 tion with the substratum. This is the first case of stolon-formation 

 that I have seen in the genus Clytia. There were never less than 14 

 marginal teeth, and I found no cases of the collapsed hydro thecal wall; 

 these points, with the greater size of the colonies, made them readily 

 distinguishable from C. bicophora. 



Clytia noliformis (McCrady). 



Campanularia noliformis, McCrady, 1858, p. 92. 

 Clytia noliformis. Nutting, 1901, p. 343, fig. 22. 

 Clytia simplex, Congdon, 1907, p. 472, figs. 14, 15. 

 Clytia noliformis, Fraser, 1912, p. 359, fig. 19. 

 Clytia noliformis. Nutting, 1915, p. 57, pi. 11, figs. 7-10. 



Colonies of Clytia noliformis are very numerous on floating Sar- 

 gassum. My specimens showed many intergradations between 

 C. simplex as described by Congdon and C. noliformis as described by 

 Nutting. 



Genus Obelia. 

 Obelia geniculata (Linnaeus). 



Sertularia geniculata, Linnaeus, 1758, p. 812. 

 Obelia geniculata. Nutting, 1901, p. 351, fig. 38. 

 Obelia geniculata, Fraser, 1912, p. 362, fig. 23. 

 Obelia geniculata. Nutting, 1915, p. 73, pi. 18, figs. 1-5. 



A few colonies were found on floating Sargassum. 



