BY DR. R. VON LENDENFELD. 243 



Umbrella nearly oval, 1£ times as high as broad, vertex flat ; 

 the 4 side surfaces strongly curved. Gastral cavity flat with 4 

 large oval mouth flaps. In the interradial elongated corners of 

 the base of the Gastral cavity there are 4 pairs of wing-shaped 

 Phacellse, every one hand-shaped and split in 20 — 30 filaments. 

 Margin of the Umbrella wit h 8 flat adradial gallert-flaps. Velarium 

 simple, narrow, continuous. The distance of the niches of the 

 sense organs from the margin of the Umbrella is about the same 

 as that of the Pedalbase. Four Pedalia very large, about as long 

 as the height of the Umbrella ; leaf-shaped, with 2 large wings. 

 The Abaxial wing reaches nearly to the middle of the interradial 

 margin of the Umbrella. The Axial wing is very narrow above, 

 and very broad and deeply cut out below. Four tentacles are 

 higher than the height of the Umbrella. 



Size : Breadth of Umbi'ella, 20 mm. Height of Umbrella, 

 30 mm. 



Locality : Indian Ocean ; Sunda, Archipel. Rabbe. 



Species. Procharybdis Jlagellata. 

 Haeckel, System der Medusen. Seite, 438. 



(1) Marsupialis flagellata, Lesson, 1843, Acalephes, p. 278. 

 Umbrella conic, stubbed above. The height twice the width ; 4 

 side surfaces strongly curved. The 4 interradial sides rounded 

 and a little projecting. Gastral cavity 1 Margin of Umbrella 

 continuous with 8 laps. Velarium simple, narrow, continuous. 

 The distance of the niches of the sense organs to the margin of the 

 Umbrella is about half the distance of the pedal base. 4 Pedalia 

 lancet shaped and half as long as the height of the Umbrella, with 

 very narrow wings. Tentacles sevei^al times as long as the height 

 of the Umbrella. 



Size : Breadth of Umbrella, 20 mm. Height of Umbrella, 

 40 mm. ; Ontogenesis unknown. 



Locality: North Coast of Australia : Torres Straits. Weber 

 (New Guinea. Lesson *?) 



