BY R. VON LENDENFELD, PH.D. 919 



11. FAMILY. LEPTOMEDUSID^. Von Lendenfeld. 



I. SUB-FAMILY. THAU VIANTIN/E. 

 46a (74.) GEN-US. OCTORHOPALON (1.) Nov. gen. 



Thamantinfe with four Radial Canals and four Gonads, eiglit 

 tentacles, and eight clubs, in the intervals between the tentacles 

 one in each Octant. 



This new Genus belongs to Haeckel's Sub-Family Laodicidse (2), 

 and ajipears very nearly related to his Genus Octonema, from 

 which it differs by the absence of Cirrhi, and by the small number 

 (8) of the niai-ginal clubs. 



197a (238), OCTORHOPALON FERTILIS. Nov. spec. 

 Plate XLIL, fig.s. 14-15. 



Umbrella somiovate, much higher than broad. Stomach repre- 

 senting a double four-sided Pyramid, Octeedral, widest in the 

 middle. Tips of the mouth produced into four inconspicuous 

 extensions at the corners. Intervening parts of the margin 

 concave. Gonads very large and extending all about the Eadial 

 Canals. The four Gonads are joined around the stomach. They 

 are richly folded transversely. 



The tentacles about two-thirds of the length of the Umbrella. 

 The perradial ones longer than the interradial ones. The bulbs at 

 the bases of the tentacles not large, elongate. The clubs 

 large, elongate-oval, a little longer than the tentacle bulbs. 



Colour : Gonads reach orange yellow. Medusae otherwise 

 colourless. 



Size : Height of Umbrella, 2-5 mm., breadth, 2 mm. 



Ontogenesis : Unknown. 



Locality : Port Jack.son. 



Season : Early spring. 



(1.) oKTo), eight ; s'onaXov, a club. 



(2.) Haeckel. Das System der Meduseu. Seite 12c 



