BY R. VON LENDENFELD, PH.D. 293 



Species. Pseudorhiza aurosa. 

 Plate III. 



Yon Lendenfeld. Zoologischer Auzeiger, Nr. 116. Band V., 

 Seite, 380. 



Umbrella 3 or 4 times as broad as high, with a reticulate 

 figure on the dorsal side.- In every octant between the two long 

 and narrow ocular flaps there are 6 velar flaps, each of which 

 consists of three secundary flaps. Arms about as long as the 

 diameter of the Umbrella. 



Colour : Umbrella colourless, with a violet reticulate figure 

 covering the Exumbrella. Entoderm of Gastral cavity, brown. 

 Upper part of mouth, arm-grooves, rose-coloured. Arm colourless 

 and transparent. Frills along the margin of the grooves, and 

 distal end of long filament richly violet. 



Size : Diameter of Umbrella, 400 mm. Thickness of gallert 

 of Umbrella, 30 mm. Brachial disc, 220 mm. in diameter, and 

 25 mm. in thickness. 



Ontogenesis : The embryos are carried about in pouches sus- 

 pended in great number from the radial canals, which run centri- 

 petally from the ring canal. They remain there till they are fit to 

 turn into Scyphystomas, then escape and affix themselves with the 

 aboral pole to any free submerged surface. The Scyphystoma does 

 not differ from other Scyphystomas. 



Locality : Port Phillip. Von Lendenfeld. Glenelg. Haacke. 



Family. Versuridae. 

 Discomedusse without tentacles and central mouth, with a single 

 central sub-genital porticus, and with ventral suctorial crisps of 

 the 8 mouth arms (without dorsal suctorial crisps). 



Genus. Hoplorhiza. 

 Versuridae with 8 simple, free, neither branched nor fork-shaped, 

 mouth-arms, which do not coalesce with their lateral walls. 



Species. Hoplorhiza simplex. 

 Haeckel, System der Medusen. Seite, 609. 



