SCYPHOMEDUS.E OF THE AUSTRALIAN SEAS. 15 



Umbrella bell-shaped, a little higher than broad. Shallow circular groove. 

 Inner part twice as high as marginal ring. The 4 perradial pedalia twice as 

 broad as the 4 interradial ones, twice as long as the 8 stump margin laps. 

 Four tentacles twice as long as the height of the umbrella. Mouth-tube 

 quadrangular prismatic, half as long as the central stomach, without barbs. 



Size. Breadth of Umbrella, 24 mm. ; height, 30 mm. 

 Locality. South Pacific Ocean, near New Zealand, Weber. 



Familia PERIPHYLLIDJE. 



Haeckel, 1879. 



Peramedusse with twelve tentacles and four marginal organs of sense, sixteen 

 margin flaps. Exumbrella with sixteen pedalia, and circular muscle. On 

 either side of the pedalia a pouch. Festoon canal consists of thirty-two flap- 

 pouches. 



Genus PERIPHYLLA. Steenstrup, 1837. 



With four perradial pouches in the mouth-tube and four basal funnel 

 cavities. The four interradial tacnials are hollow caves, along the whole 

 length of which there are two rows of gastral filaments. 



PERIPHYLLA MIRABILIS, E. Haeckel. 



Peripliylla mirabilis, E. Haeckel. Das System der Medusen. Seite 422. 

 Periphylla mirabilis, E. Haeckel. Die Tiefsee Medusen der " Challenger " 

 Expedition. Seite 54. Tafel xviii, xxiii. 



Periphylla mirabilis, R. v. Lendeiifeld. The Scyphomedusrc of the Southern 

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

 volume ix, part 1, page 168. 



Umbrella conic, ^- higher than broad. Pedal zone higher than the lap zone. 

 Both together % as high as the cone. Margin laps oval, distal wings trian- 

 gular. Tentacle laps slightly projecting, less than the 8 laps of the marginal 

 sense organs. Tentacles twice as long as height of umbrella, at the base \ as 

 broad as the margin laps. Mouth-tube cubic, -1- as high as umbrella, 8 adraclial 

 long barbs. 



Colour. In spirits, light violet, sub-umbral surface dark violet. Gonads 

 orange. 



Size. Breadth of umbrella, 120 mm. ; height, 160 mm. 



Locality. East coast of New Zealand. Latitude south 40 28' ; longitude 

 east of Greenwich, 177 43'. Depth, 1,100 fathoms. Station nr. 108, 

 " Challenger." Wyville Thomson. 



