STIIENOM.E. 43 



Aurelia labiata Cuam. ct Evsen. 



Attrclia lahiftta Ciia.m. ft EvsKNir. N. Acta, X. p. 358, PI. 38, Fig. 1. 



Medusa lahiuta Escii. 8yst. d. Acal., p. G4. 1829. 



Ocyrne labiata Bl. Man. (rActinol., PI. 42, Fi<rs. 1, 2. 1834, 



Aurelia lahlala Lkss. Zooph. Acal., p. 377. 1843. 



Aurelia labiata Agas.s. Cont. Nat. Hist. U. S., IV. j). IGO. 1862. 



Many of the Di-scophora? of the southern part of the Northwest Coast 

 must breed during the whole year, as I have found the adult with the 

 ovaries fully developed during nearly every month of the year, in the 

 iiarhor of San Francisco. This is at least the case with Phacelhjphora 

 and Aurelia, which are the two moftt common genera of the harbor of 

 San Francisco. Further north, however, in the Gulf of Georgia, the 

 Discophora^ pass the winter in their hydra state. 



North Calilbrnia (Cham, and Eyseu.) ; California (Eschscholtz) ; San 

 Francisco Bay (A. Agassiz). 



Aurelia marginalis Agass. 



Aurelia marginalis Ag.a.ss. Cont. Nat. Hist. U. S., IV. pp. 86, 160. 1862. 



Florida, Key West (L. Agassiz). 



Cat. No. 352, Key West, Fla., L. Agassiz. 



Family STHENONI.^ Agass. 



Sthenonice Agass. Cont. Nat. Hist. U. S., Vol. IV. pp. 115, 161. 1862. 



HECC^EDECOMMA Bii. 



Hecccedecomma Braxdt. Mem. Acad. St. Pctersb., p. 300. 1838. 

 Hecccedecomma Agass. Cont. Nat. Hist. U. S., IV. p. 161. 1862.- 



Heccaedecomma ambiguum Br. 



Hecccedecomma ambiguum Bk. Mem. Acad. St. Petersb., p. 300, Pis. 27, 28. 1838. 

 Hecccedecomma ambiguum Ag.\ss. Cont. Nat. Ilist. U. S., TV. \). KJl. 1862. 

 Cyanea ambigua Less. Zooph. Acal., p. 388. 1843. 



A species of this genus was observed in the Straits of Fuca, agreeing 

 with the description and figures of Mertens so closely, that it is prob- 

 able he observed this same species on the coast of Russian North 

 America. 



Port Townshend, W. T. (A. Agassiz). 



