SCYPHOMEDUS.E OF THE AUSTRALIAN' SEAS. 19 



Cyanea Labiche, Quoy et Gaimard. Voyage cle 1'Uranie, etc. Zoologie, 

 page 571, plate 84, figur 1. 



Peloyia panopyra, R. v. Lendenfeld. The Scyphomeduase of the Southern 

 Hemisphere. Proceedings of the Linnean Society of New South Wales ; 

 volume ix., part 2, page 266. 



Umbrella semi-spherical, flattened above, nearly twice as broad as high. 

 Nettlewarts of the ex-umbrella, small and scattered, elongated ; most dense on 

 the margin of the umbrella. Marginal flaps nearly quadratic, slightly 

 crenated on the distal margin. Manubi-ium long and narrow, nearly twice as 

 long as the radius of the umbrella ; three times as long as broad. Mouth- 

 arms long and narrow, one and a half times as long as the manubrium ; about 

 three times as long as the radius of the umbrella ; its membranous border is 

 twice as broad as the thin cylindrical middle-rip at its base. 



Colour. Variable, generally pale-rose or violet ; mouth-arms more violet ; 

 gonads more purple ; nettle-warts violet. 



Size. Breadth of umbrella, 50 mm. ; height of umbrella, 33 mm. 

 Ontogenesis. Unknown. 



Locality. Tropic Zone of the Pacific Ocean, from Australia to Peru, 

 Peron, Eschscholtz, Lesson, von Mertens, Couthony, itc. 



Familia CYANIDJE. 



L. Agassiz, 1862. 



Discamedusa?, with a simple cross-shaped mouth, surrounded by four folded 

 mouth-arms. Gastral cavity, with 16 or 32 broad radial ponches, and 

 branched ccocal flap-canals, without a ring canal (8 or 16 marginal bodies), 

 and 8 or more hollow tentacles. 



Genus STEMOPTYDIA. L. Agassis, 1862. 



Cyanidre with 8 marginal bodies and 40 tentacles, 5 on each tentacle llap. 

 Umbrella with 8 main and 16-32 secondary flaps. 



STENOPTYCHA ROSKA, L. Agassi/. 

 Stenoptyclia rosea, L. Agassiz. 1862. Monogr., Acal., Contrib., iv, page 162. 



Cyanea rosea, Quoy et Gairnarcl. 1827. Voyage de lUranie, etc. Zoologie, 

 page 570, plate 85, figure 1, 2. 



Stenoptycha rosea, E. Haeckel. Das System der Medusen. Seite 525. 



Slenoptycha rosea, Pt. v. Lendenfeld. The Scyphomedus;e of the Southern 

 Hemisphere. Proceedings of the Linnean Society of New South "Wales ; 

 volume ix, part 2, page 272. 



B 



