LAOMEDEA. 



LAOMEDEA Kuix. 



Laomedea Lamx. ; in Bull. Soc. Phil. 1812. 



Laomedea Agass. Cont. Nat. Hist. U. S., IV. p. 352. 1862. 



Campanularia L.vmk. (pp.). An. s. Vert., II. p. 129. 



Laomedea rigida A. Aoass. 



This species is remarkable for its peculiar mode of growth. At first 

 glance it would readily be mistaken for a species of Dynamena, so 

 regular is the succession of the hydnv along the stem, and also on 

 account of the absence of branches. The sterile and reproductive liy- 

 dri\3 are found on the sides of the main stem, attached by a very short 

 pedicel, and alternate so regularly on eacli side that its Campanularian 

 nature is noticed only after a careful examination. The sterile hydra3 

 resemble those of Laomedea amj)hora, while the reproductive calycles 

 are identical in shape with those of Ohelia commlssuraJls. The main 

 stems of a cluster are closely crowded together, and attain a height of 

 three to four inches. 



Cat. No. 122, San Francisco, Cal., December, 1859, A. Agassiz. Ily- 

 dromedusarium. 



Laomedea araphora Agass. 



Laomedea amphora Agass. Cont. Nat. Hist. U. S., IV. pj). 311, 314, Fig. 50; p. 352, Pis. 30, 31, 

 Figs. 1-8. 1862. 



Massachusetts Bay (Agassiz) ; Grand Manan (Mills) ; Long Island 

 Sound (Leidy, A. Agassiz). 



Cat. No. 91, Nahant, July, 1852, H. J. Clark. Hydromedusarium. 



Cat. No. 92, Nahant, July, 18G1, A. Agassiz. Hydromedusarium. 



Cat. No. 93, Nahant, July, 1861, A. Agassiz. Hydromedusarium. 



Cat. No. 94, Nahant, March, 1861, H. J. Clark. Hydromedusarium. 



Cat. No. 95, Nahant, April, 1855, H. J. Clark. Hydrarium. 



Cat. No. 96, Nahant, 1857, L. Agassiz. Hydrarium. 



Cat. No. 97, Nahant, March, 1856, H. J. Clark. Hydromedusarium. 



Cat. No. 98, Naushon, Sept. 1861, A. Agassiz. Hydromedusarium. 



Cat. No. 99, Grand Manan, Aug. 1857, J. E. Mills. Hydromedusarium. 



Cat. No. 100, Newport, R. I., S. Powell. Hydromedusarium. 



Cat. No. 101, Newport, R. I., Dr. J. Leidy. Hydromedusarium. 



Cat. No. 102, Boston, March, 1856, H. J. Clark. 



Cat. No. 114, Nahant, Sept. 1854, H. J. Clark. Young ? 



Cat. No. 398, Nahant, July, 1862, A. Agassiz. 



Museum Diagram No. 18, after L. Agassiz. 



