160 



EUDENDRIUM RAMOSUM. 



Eudendrium tenue A. AGASS. 



Fis - 250 - This species (Fig. 250) can at 



once be distinguished from the 

 E. dispar Agass. (Fig. 249) by 

 its large clusters of Medusae, 

 while in the E. dispar the Me- 

 dusae buds are always somewhat 

 scattered, and never clustered to- 

 gether, as in E, tenue. This is 

 quite a small species, the tallest 

 specimens hardly rising more than 

 an inch to an inch and a half, 

 while the E. dispar is a large 

 Hydroid, growing in tall steins, 

 branching but little; the E. tenue, 

 on the contrary, forms small colo- 

 nies of densely crowded individ- 

 uals, branching profusely. The color is light pinkish. 



Massachusetts Bay, Nahant (A. Agassiz) ; Buzzard's Bay, Naushon 

 (A. Agassiz). 



Cat. No. 39, Naushon, Sept. 1861, A. Agassiz. Hydrarium. 



Cat. No. 40, Suisconset, July, 1849, L. Agassiz. Hydrarium. 



Cat. No. 41, Suisconset, July, 1849, L. Agassiz. Hydrarium. 



Cat. No. 402, Nahant, June 17, 1862, A. Agassiz. Hydromedusarium. 



Eudendrium ramosum McCR. 



Eudendrium ramosum McCR. Gymn. Charleston Harbor, p. 64. 

 ? Eudendrium ramosum JOHNST. Brit. Zooph., p. 46. 



McCracly has identified this species with the English E. ramosum 

 Johnst. Specimens collected at Charleston by Professor Clark cer- 

 tainly show a great similarity to the English species, but it still 

 remains to be proved, as we do not know their development, that 

 these species are identical. 



Charleston, S. C. (McCrady). 



Cat. No. 42 Charleston, S. C., December, 1861, H. J. Clark. 



Fig. 250. A part of a male colony ; magnified. 



