THE HYDROMEDUSAE 



rliC 



CC 



I-'li:. 40. 



Fi(i. 45. 



y 



i-i.—Vhysophora hydrostatiai. a, stem or conn of the colony ; a', pneiiinatoi)hore (air- 

 blailder) ; vi, iiectopliore ; o, orifice foniied by the margin of the umbreUa ; t, hydrophyllia • v 

 gastrozooifl ; i, tentacles ; (i, sporosacs. (From Gegenbanr.) ' ' 



40. — Diagram of the structure of a Diphyid. C, coenosarc carrying cormidia ; CC, cir- 

 cular canal of nectophore ; //, hydroecium ; N', u|)per, and jY", lower, nectoi>hore ; }', i)e'dicle 

 of lower nectophore ; JiC, radial canals of nectophore ; .SO, soniatocyst. (Modified from 

 Haeckel.) 



47.— Diagram of the structure of an Ersaeome (free nionogastric generation of a Dijihyid). 

 C, gastrozooid ; //, hydroiihyllium ; ,\t, sexual medusoid.s ; N, nectophore; 01,, oleocyst ; 

 y, tentacle of gastrozooid. (Modilitsl from Haeckel.) 



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