SCYPHOMEDUS.E OF THE AUSTRALIAN SEAS. 13 



SCYPHOMEDUSvE. 



Ray Lancaster, 1877. 



CCELENTERATES without collared cells, medusoid with gasiral filaments and 

 without internal mouth tube. 



I.-OUDO STAMOMEDUSJi). 



Haeckel, 1879. 



Scyphomeduste without sense organs, four or four pair of gonads in the 

 sub-umbral wall, stomach with four large perradial pouches. 



Familia 



Johnston, 1847. 



Margin of umbrella simple, undivided, without hollow arms or margin flaps, 

 with simple tentacles. On the ex-umbrella a peduncle with which the medusa 

 affixes herself. 



Genus CRATEROLOPHUS. Clark, 1863. 



Lucernarida? with four mesagan pouches in the wall of the sub-umbrella, 

 without marginal anchors or papilho. 



CRATEROLOPHUS MACROCYSTIS, R. von Lendenfeld. 



Craterolophus macrocystis, R. v. Lendenfeld. The Scyphomedusa? of the 

 Southern Hemisphere. Proceedings of the Linnean Society of New 

 South Wales; volume ix, part 1, page 157. 



The genus Craterolophus had only been found on the coast of Heligoland, 

 where the hitherto single species Craterolophus Tethys (Clark) is very abun- 

 dant, but nowhere else. Our species is accordingly the second. Unfortunately 

 it is very rare, so that my description must be imperfect, as I only got two 

 specimens, both of which were cut into sections forthwith. 



Umbrella deep bell-shaped, expanded about half as broad as high (in 

 Craterolophus Tethys broader than high). Stalk about f of the height of the 

 umbrella (in Craterolophus Tethys only | J). Eight arms short at equal 

 distances ; every arm with a cluster of about thirty tentacles. The gonads 

 are like those of Craterolophus Tethys, feathery. 



Colour. Dark olive green, fades in spirits. 



