BY R. VON LEXDENFELD, PH.D. 263 



many short alternating tentacles (half as long as the radius of the 

 Umbrella.) Tentacle-pedalia broader and shorter than the rhopalar 

 pedalia. The rhopalar flap canals rudimentary, much narrower 

 and shorter than the tentacular canals. Marginal flaps elliptic, 

 truncate with a broad membranous fringe. 



Size : Breadth of Umbrella, 58-66 mm. Height of Umbrella, 

 8-12 mm. Ontogenesis unknown. 



Locality : Antartic Ocean (Indian and Atlantic part). Wyville 

 Thompson. 



Family. Liner g idee. 



Discomedusa? with simple quadrangular Manubrium without 

 mouth-arms, and simple quadratic Mouth. 8 marginal bodies, 8 

 tentacles and 16 marginal flaps, with broad radial-pouches, and 

 branched sack shaped flap canals, without ring canal. 



Genus. Linantha. 



Linergidse with 4 horse-shoe shaped interradial Gonads (ovaries 

 the proximal arches of which are simple and not divided. On 

 the Subumbrella there are small vesicular diverticals or Subumbral 

 pouches. 



Species. Linantha lunulata. 



Haeckel, System der Medusen. Seite, 497. 



Umbrella cap shaped with horizontal upper surface and flat 

 declining side-walls, twice as broad as high. Umbrella flaps oval, 

 pointed, nearly twice as long as broad. Flap canals much bent and 

 branched dendritically. The longest, \ as long as the flap itself. 

 In every flap 60-70 cul-de-sac shaped, terminal branched. Ten- 

 tacles cylindrical, nearly as long as the radius of the Umbrella, 1 \ 

 times as long as the flaps. 4 Gonads simple horse-shoe shaped 

 without interradial septum, with flat, crooked, nearly semi-circular 

 proximal arches. 



Size: Breadth of Umbrella, 10 mm. Height of Umbrella, 

 6 mm. Ontogenesis unknown. 



Locality : Tropical Coast of the Pacific, South America, Galo- 

 pagos Island. Fuchs. 

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