HYDROID FAUNA OF THE BERMUDAS. 245 



imens in my collection from Fairyland Creek reached a height of 80 

 mm., and the number of tentacles varied from 35 to 60. The distal 

 hydranths are usually larger than the proximal. 



Eudendrium ramosum (Linnaeus). 



Tubniaria ramosa, Linnaeus, 1767, p. 1302. 

 Eudendrium ramosum, Hargitt, 1901, p. 309, figs. 5, 6. 

 Eudendrium ramosum, Nutting, 1901, p. 332, fig. 7. 

 Eudendrium ramosum, Congdon, 1907, p. 464. 

 Eudendrium ramosum, Fraser, 1912, p. 349, fig. 8. 



A few colonies, 50-75 mm. high, were found on a floating buoy in 

 Hamilton Harbor. 



Family HALECIDAE. 

 Genus Halecium. 



Halecium bermudense Congdon. 



Congdon, 1907, p. 472, figs. 16-20. 

 Fraser, 1912, p. 367, fig. 28. 

 Stechow, 1914, p. 134. 

 Stechow, 1919, p. 33. 



This is one of the most abundant species in Bermuda, growing on a 

 great variety of structures in almost every locality where hydroids are 

 to be found. My specimens attained a height of 75 mm., Congdon's 

 25-35 mm. 



Halecium nanum Alder. 



Halecium nanum. Alder, 1859, p. 355. 

 Halecium marki, Congdon, 1907, p. 474, figs. 21-23. 

 Halecium nanum, Fraser, 1912, p. 367, fig. 29. 

 Halecium nanum, Stechow, 1914, p. 135. 

 Halecium nanum, Stechow, 1919, p. 36. 



This minute species was often found on floating Sargassum ; a few 

 colonies were also found with //. bermudense on Pennaria from Cow- 

 Ground Flat. The colonies reached a maximum height of 8 mm.; 

 Congdon's specimens were l|-3 mm. high. 



Halecium nanum appears to have two modes of growth; the resulting 



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