SCYPIIOMEDUS.E OF THE AUSTRALIAN SEAS. 31 



Crambessa mosaica, Von Lendenfelcl. The Scyphomedusa; of the Southern 

 Hemisphere. Proceedings of the Linnean Society of New South Wales ; 

 volume ix, part 2, page 299 300. 



Crambessa mosaica, Von Lendenfeld. Local Colour Variety of Scyphomedusse. 



Proceedings of the Linnean Society of New South Wales ; volume ix, 



page 926927. 



Umbrella slightly vaulted, nearly semi-spherical, 2 3 times as broad as 

 high, with numerous narrow marginal flaps. (To 200 1 about 24 velar flaps 

 on each octant.) Sides of the gastro-genital cross nearly rectangular. The 

 same breadth at the distal, and at the proximal end ; mouth-arms a little 

 shorter than the diameter of the umbrella. Under-arms conic, pointed below, 

 surrounded by thickly-set suctorial crisps, three times as broad as the thin and 

 short upper-arm. 



Colour. Blue or brown, with a net of white lines on the ex-umbrella ; male 

 genital organs grey, green ; ovaries, deep orange-red. 



Size. Breadth of umbrella, 200 350 mm.; height of umbrella, 80 120mm. 



Ontogenesis. Unknown. 



I distinguish two varieties in this species (colour varieties of Seyphomedusse, 



l.c.). 



I. CRAMBESSA MOSAICA COXSERVATIVA. 



Corresponds to the descriptions of the older author, is blue and transparent. 

 Locality. Port Phillip, v. Lendenfeld. Port Jackson, Quoy et, 

 Gaimard ; Huxley ; Illawarra Lake, Drayton. 



II. CRAMBESSA MOSAICA SYMBIATICA. 



The whole of the gallert is pervaded by an abundance of zooxanthella- 

 yellow cells which renders them deep yellowish-brown and untransparent. In 

 the young stage without yellow cells and colourless. 



This variety seems to have been produced since the older observers made 

 their collections within the last forty years. 



Locality. Port Jackson, v. Lendenfelcl. 



Familia LEPTOBRACHIDJE. 



Claus. 1883. 



Rhizostoma) with very broad brachial disc, in which the upper-arms are 

 more or less retracted. The slender lower-arms are ribbon-shaped elongated 

 and furnished with three crisps ; these may occur in the distal portion only. 

 The canal system forms a dense network nearly throughout the whole of the 

 disc. The radial canals are numerous. The eight which lie in the primary 

 and secondary radii are larger than the others. Sub-genital porticus continuous. 

 Brachial disc divided from the umbrella. 



