486 MEDUSA OF THE WORLD. 



Genus JEGINODISCUS Haeckel, 1879. 



ALginoJiscus, Haeckel, 1879, Syst. der Medusen, p. 344. 



The only form is the little-known ALginodiscus actinodiscus Haeckel, from the coast of 

 Zanzibar. A further study of this form is required before the genus can be accepted with 

 certainty. 



GENERIC CHARACTERS. 



iEginidje having 16 peronial strands, 8 tentacles, and 32 (16 cleft) peripheral stomach- 

 pouches. 



iEginodiscus actinodiscus Haeckel. 



dUginodiscus actinodiscus, Haeckel, 1879, Svst. der Medusen, p. 344. 



This medusa is briefly described by Haeckel, without figures, from a preserved specimen. 

 The bell is lenticular, 40 mm. wide, 13 mm. high. 16 peronial strands, 8 tentacles 3 times as 

 long as the bell-radius. Four 3-cornered lips. There are 32 (16 cleft) rectangular peripheral 

 stomach-pouches, each one-third as long as the bell-radius. Gonads developed in the ectoderm 

 of the subumbrella under the stomach-pouches. Zanzibar, Indian Ocean. 



