300 THE SCYPHOMEDUS.E OF THE SOUTHERN HEMISPHERE, 



surrounded by thickly set suctorial crisps. 3 times as broad as 

 the thin and short upper arm. 



Colour : Blue or brown, with a net of white lines on the 

 Exumbrella ; male genital organs grey-green, ovaries deep orange- 

 red. 



Size: Breadth of Umbrella, 200-350 mm. Height of Umbrella, 

 80-120 mm. Ontogenesis unknown. 



Locality : East coast of Australia, Port Jackson, Quoy et 

 Gaimard, Huxley ; Illawarra Lake, T. Drayton ; Port Phillip, 

 Port Jackson, von Lendenfeld. 



Genus. Mastigias. 



Crambessidse, with free strong upper-arms and with strong 

 three-cornered pyramidal under-arms, the 3 wings of which have 

 suctorial crisps. At the distal end of each arm there is a club- 

 shaped, mostly three-cornered, gallert appendage (or terminal knot), 

 without suctorial crisps. 



Genus. Mastigias papua. 



Haeckel, System der Medusen. Seite, 123. 



Mastiguas papua. L. Agassiz, 1862. Monogr. Acal. Contrib., 

 IV., p. 152. 



Cephea papua. Lesson, 1829. Voyage de la Coquille Zoophyt., 

 p. 122, pi. XL, figs. 2, 3. 



Cephea papuensis. Griffiths, 1832. In Cuvier's Anim. Kingd., 

 pi. III., fig. 3. 



Cephea ocellata? Huxley — (non Peron !) — 1877. Manual 

 Invert. Anim., p. 137, figs. 19, 21. 



Bhizostoma papua. Lesson, 1843. Acalephes, p. 715. 



Umbrella semi-spherical, with 8 marginal flaps (in each octant 

 8 semi-circular velar flaps between 2 narrower ocular flaps.) 

 Arms (without appendix) about half as long as the radius of the 

 Umbrella. Upper arm and under arm nearly the same length. 

 Terminal appendix three-cornered prismatic, a little longer than the 

 diameter of the Umbrella. 



