CLYTIA. 77 



CLYTIA Lamx. 



Chjtia Lamx. Bull. Soo. Phil. 



CI i/tia Ag\»s. Cont. Nat. Hist. U. S., IV. pp. 297, 354. 1862. 



CuliccUa II1XCK8. 



Trachopijxis Ag.\ss. Cont. Nat. Hist. IJ. S., \\ . pp. 2lt7, 3.04. 1862. 



? Platypyxis Ag ASS. Cont. Nat. Hist. U. S., IV. pp 306,3.^)4. 18C2. 



The adult Medusa of Platypyxis cylindrica of Professor Afrassiz is 

 not known ; he has separated this genus from Clytia from tlie chiiracter 

 of the reproductive calycles only. The young Medusa? are very much 

 alike, and we may have a case here, the reverse of what we find in 

 Sarsia and Syndictyon, of Medusfe very similar in their younger stages, 

 but totally different in the adult forms. 



Clytia intermedia Agass. 



Clytia intermedia Agass. Cont. Nat. Hist. U. S., IV. p. 305. PI. 29, Figs. 10, 11. 1862. 



Cat. No. 143, Nahant, Mass., April, 1855, H. J. Clark. Hydrarium. 

 Clytia volubilis A. Agass. 



Campanularia volubilis Aldek (non Auct). Cat. Zooph. Northumb. and Durham, p. 35. 



Alder was the first to distinguish the several species which have 

 been confounded under the name C. volubilis by different authors. 

 Specimens in no way to be distinguished from the European C. volu- 

 bilis have been found on our coast with their reproductive calycles, 

 seeming to leave little doubt that the specimens here catalogued 

 belong to this species. 



Massachusetts Bay (L. Agassiz) ; Cape Cod (L. Agassiz). 



Cat. No. 145, Norway, Sars. Hydromedusarium. 



Cat. No. 146, Cape Cod, June, 1857, Captain N. E. Atwood. Hydro- 

 medusarium. 



Cat. No. 432, Sea Coal Bay, N. S., 1861, Anticosti Expedition. Hy- 

 dromedusarium. 



Cat. No. 435, Mingan Islands, 1861, Anticosti Expedition. Hydro- 

 medusarium. 



