PELAGID^. 47 



Cyanea Postelsii Bb. 



Cyanea Postehii Br. Mem. Ac. St. Pet, p. 375, PI. 12, 13, 13». 1838. 

 Cyanea Postelsii Agass. Cont. Nat. Hist. U. S., IV. p. 162. 1862. 

 Cyaneopsis behringiana Br. Mem. Ac. St. Pet., PL 11, Fig. 1. 1838. Young? 

 f Cyanea ferruginea Esch. Syst. d. Acal., p. 70. 1829. 

 Cyanea Postelsii Less. Zooph. Acal., p. 387. 1843. 



This species is extremely abundant during the Fall, in the Gulf of 

 Georgia and the Straits of Fuca, and rivals in size its representative on 

 the eastern shores of North America. 



Kamtschatka, Aleutian Islands, and "Western Coast of North America 

 (Eschscholtz) ; North Pacific, Norfolk Sound, between Sitka and Una- 

 laschka (Mertens) ; Port Townsend, W. T. (A. Agassiz). 



Family PELAGIDjE Geg. 



Pelagidm Gegenb. Zeitsch. f. Wiss. Zool., Vm. p. 210. 1856. 

 Pelagidce Agass. Cont. Nat. Hist. U. S., IV. pp. 121, 163. 1862. 



PELAGIA Per. et Les. 



Pelagia Per. et Les. Ann. du Mus., XIV. p. 37. 1809. 



Pelagia EsCH. Syst. der Acal., p. 72. 1829. 



Pelagia Less. Zooph. Acal., p. 388. 1843. 



Pelagia Aga.ss. Cont. Nat. Hist. U. S., IV. p. 163. 1862. 



Diancea Lam. Syst. An. s. Vert., H. p. 507. 



Pelagia cyanella Per. et Les. 



Pelagia cyanella Per. et Les. Ann. du Mus., XIV. p. 37. 1809. 



Pelagia cyanella EscH. Syst. der Acal., p. 75. 1829. 



Pelagia cyanella Bosc. Hist. Nat. des Vers., II. p. 140, PI. 17, Fig. 3. 



Pelagia cyanella Agass. Cont. Nat. Hist. U. S., IV. pp. 128, 164, HI. Pis. 13, 13% PI. 12. 



Medusa pelagia Swartz. Konig. Vetensk. Akad. 1788. 



Medusa 2}elagia LoFFLrsG. Reise, p. 105. 



Medusa pelagia Li>f. Syst. Nat. 



Pelagia americana Per. et Les. Ann. du Mus., XIV. p. 39. 1809. 



Pelagia noctiluca Cham. ; in Choris' Voyage Pittoresque, p. 3. ^'S- 68. 



Pelagia denticulata Per. et Les. Ann. du Mus., XIV. p. 38. 



Diancea cyanella Lamk. An. s. Vei-teb., H. p. 507. 



Diancea denticulata Lamk. An. s. Verteb., II. p. 507. 



This species (Fig. 68) is found along the Florida 

 Eeef In this genus the eggs develop directly into 

 the young Medusse, and the embryos are never at- 

 tached to the ground. 



Caribbean Sea (Swartz, Loflfling) ; Coast of Florida, 

 Tortugas (L. Agassiz). 



Fig. 68. Pelagia cj-anella Per. et Les. (copied from Agassiz's Contributions), a, umbrella ; 

 m, actinal appendages ; (, marginal tentacles. 



