290 THE SCYPHOMEDUSiE OF THE SOUTHERN HEMISPHERE, 



about as long as the radius of the Umbi*ella. Scapulets of the 

 same size and shape as the free part of the upper arm ; a little 

 shorter than the broad lower arms. 



Size : Diameter of Umbrella, 150 mm. Height, 50 mm. 



Locality : Sunda Archipel. Sumatra. Weber. 



Species. Eupilema claustra. 



Haeckel, System der Medusen. Seite, 591. 



(?) Claustra Mertensii. Lesson, 1843. Acalephes, p. 379. 



(?) Cyanea (!) Rhizostoma. Brandt, Mem. Acad. St. Peters- 

 burgh. " Tom. IV., p. 388, 407, tab. XXXI. 



Umbrella flat hat-shaped. In every Octant 6 broad tri-angular 

 velar, and two small lancet shaped ocular flaps. The intra-circular 

 canal net arcades are distant from the mouth-pillars as much as 

 their own breadth. 



Stem of disc, cubic, double as thick as the mouth pillars, arms 

 i | times as long as the radius of the Umbrella. Scapulets half as 

 long as the free part of the upper arm, which is a little longer 

 than the broad lower arm. 



Size : Diameter of Umbrella, 200 mm. Height, 70 mm. 



Locality : Marquesas Islands. Smith. 



Genus. Pilema. 



Pilemidse with 8 pair of scapulets, with free, triangular, pyra- 

 midal, lower arms. The three wings of these bear on their free 

 margin suction crisps, but no other appendages. At the terminal 

 end of each arm a club-shaped or triangular bulb without suction 

 crisps. 



Species. Pilema cap^nse. 



Haeckel, System der Medusen. Seite, 645. 



Cephea capensis. Quoy et Gaimard, 1824. Voyage de l'Uranie, 

 p. 568,*pl. LXXXIV, fig 9. 



Rhizostoma capensis. Lesson, 1843. Acalephes, 417. 



Umbrella semi-spherical. In every Octant six broad semi- 

 circular velar flaps between two pointed triangular ocular flaps. (?) 



