ACALEPH^E. 125 



Oceania PEKON (with the addition of several species, and 

 other genera). 



Subgenera : Oceania PERON, Circe MERTENS, Conis BRANDT, 

 Callirhoe PERON, Thaumantias ESCHSCH., Tima ESCHSCH., Melicer- 

 tum OKEN, Cytceis ESCHSCH., Phorcynia PERON. 



Sp. Oceania marsupialis ESCHSCH., Medusa marsupialis L. ; PLANC. de 

 Conch, min. not. Tab. iv. fig. 5 ; MILNE EDWAKDS, Ann. des Sc. not. xxvm. 

 1833, pp. 248 266, PI. ii 13, Mediterranean; Callirhoe Basteriana 

 PEKON, BASTER NatuurTc. Uitsp. n. Tab. v. fig. 2, 3, &c. 



Family X. JEquoridce. Disc without lateral cavities, inclosing 

 organs of generation. Body depresso-campanulate or plane. Mouth 

 and oesophagus not elongated into a proboscis. Arms none or 

 little evolved. Stomach with sacculated appendages or canals 

 radiating, elongate, numerous. 



^Equorea PERON, Cuv. 



Subgenera : JEquorea PERON, Stomobrachium BRANDT, Mesonema 

 ESCHSCH., Eurybia ESCHSCH., Polyxena ESCHSCH. 



Sp. JEquorea Forskalina ESCHSCH., Medusa aquorea FORSK. Icon. rer. not. 

 Tab. xxxn. ;JEquorea violacea MILNE EDWARDS Ann. des Sc. nat. 2e 

 serie, Tom. xvi. Zool. pp. 193 199 ; Cuv. R. Ani. ed. ill., Zooph. PL 72 ; 

 the margin has many conical cirri, the mouth is wide and round ; from 

 the stomach proceed about eighty long undivided rays (water-canals), which 

 run towards the margin, and appear to open on a small conical point 

 between two cirri. The genital organs are situated below on the disc, on 

 each side of every ray as folded borders, but they do not extend as far as 

 the margin. (EsCHSCHOLTZ divided the Discophorce into Cryptocarpce and 

 Phanerocarpce, Syst. der Acal. p. 41 ; to the last, which have the sexual 

 organs placed crucially in the disc and attracting observation by their 

 colour, belong the Rhizostomidce and Medusidce ; to the first the Geryonidce, 

 Oceanidce and ^Equoridce ; in all of these the sexual organs have not yet 

 been detected, but they will probably be found at the under side of the 

 disc, and since in ^Equorea molacea, according to the observations of 

 MILNE EDWARDS, they strike the eye on this surface, and are also dis- 

 tinguished by their violet colour, we cannot accept the name Crypto- 

 carpce. 



[The Cryptocarpse of ESCHSCHOLTZ include the naked- eyed Medusae of FORBES.] 



Note to the Discophorce. There remain certain genera of authors, 

 in which a mouth has not been found, namely Eudora and Berenice 

 PERON. (Sp. Berenice rosea, Cuvieria PERON Voyage aux terr. 

 austr. PI. 30, f. 2 ; GUERIN Iconogr. Zooph. PI. 16, fig. 1.) These 



