260 THE SCYPHOMEDUSJE OP THE SOUTHERN HEMISPHERE, 



Family. Ephyridai. 

 With broad radial-pouches, without terminal branch-canals. 

 Discomedusse with simple, four cornered Manubrium, without 

 mouth-ai'ms, with simple central mouth. Mostly 16 broad radial- 

 pouches (8 ocular and 8 tentacular) rarely 16-32. "With these 

 alternating as many short, solid tentacles. Mostly 16 (rarely 

 32-64) marginal flaps with or without simple flap-pouches, always 

 without branched flap-canals. 4 interradial or 8 adradial Gonads 

 in the Subumbrella wall of the Gastral cavity. 



Genus. Ephrya. 

 Ephyridse with 8 marginal bodies, and 8 tentacles, with 1 6 

 marginal flaps without flap-pouches, and 4 interradial horse-shoe 

 shaped Gonads. 



Species. Ephyra prometeor. 



Haeckel, System der Medusen. Seite, 482. 



Umbrella flat bell-shaped, 1^ times as broad as high. Marginal 

 flaps oval, about as long as broad, and i as long as the radius of 

 the Umbrella. Tentacles pointed, twice as long as the marginal 

 flaps. 4 simple interradial Gastral filaments. 4 Gonads horse- 

 shoe shaped without flaps and smooth. 



Size : Breadth of Umbrella, 8 mm. Height of Umbrella, 6 m.rn. 

 Ontogenesis unknown. 



Locality : Coast of Australia. Weber. 



Species. Ephyra discometra. 



Haeckel, System der Medusen. Seite, 641. 



Umbrella flat, orbicular. Marginal flaps pentagonal, pointed, 

 its tentacular side twice as high as its ocular side. Tentacles 

 cylindrical, club like at the end, the same length as the radius of 

 the Umbrella. In each of the 4 phacellae there are three Gastral 

 filaments. 4 Gonads horse-shoe shaped, two-flapped. 



Genus. Palephyra. 

 Ephyride with 8 marginal bodies and 8 tentacles, 16 marginal 

 flaps and 16 flap-pouches (fork-shaped branches of the 8 ocular 

 radial-pouches) and with 7 interradial horse-shoe shaped Gonads. 



