LIST OF THE WOOD-CUTS. 



XI 



(L 



Profile view, somewhat magnified, of IlAi.npsrs cruciata . 

 Natural attitude of the same Medusa (Fi^. 151) 

 Abactiual view of Zy(iOD.\CTYLA ouoexl.\xdic.\ . 



Profile view of Fig. 153, half natural size 



Portion of the cireular tube ........ 



Young Zygodaetyla, great!}- magnified ..... 



Profile view of ZviioDACTVLA crass.\, somewhat reduced in size 

 Quarter-ilisk of Zygodaetvla crassa ...... 



Portion of the disk of Zygodactyl.v cyaxea, from the abactinal poll 



Crem.\tostoma flava, in profile 



Portion of the disk of ^Equorea albida, from the abactinal pole 

 A natural attitude of jEquorea albida ...... 



Magnified view of the marginal tube ..... 



Eirene CffiRCLEA. (L. Agassiz.) 



Tima FORMOSA, half natural size . . . 

 Quarter of the disk, from the abactinal pole, natural size 



Digestive cavity and aotinostome 



Portion of the ovary 



Magnified portion of the circular tube ..... 



Young Tima fbrmosa, natural size ....... 



Digestive cavity of Fig. 169 . 



Young Planula; of Tima ........ 



Single Ilyilra of the tuft of a Tima Ilydrariura, greatly magnified 

 Profile of EuTi.MA LIMPIDA, reduced in size .... 



Quarter-disk of Fig. 173 . . 



Magnified view of proboscis and genital organs .... 



ISIagnifiod portion of a part of the circular canal 



Magnified marginal capsule . ....... 



Magnified view of the rudimentary tentacles .... 



Profile view, somewhat magnified, of Polyorchis penicillata 

 Ovaries of one of the chymiferous tubes ..... 



Section of bell .......... 



Part of disk of Fig. 1 79, seen from the abactinal jxjle 

 Two of the marginal tentacles in a contracted state 



Adult Medusa of L.\Fa;.\ calcarat.\ 



One of the ovaries and the actinostome ..... 



Actinostome, actinal view ....... 



Magnified view of a jrartion of the circular tube .... 



Actinostome and rudimentary ovaries, seen in profile 



Different attitude of Medusa of Fig. 184 . 



Hydrarium of Lafcea calcarata. ...... 



Reproductive calycle ......... 



Medusa immediately after its escape from the reproductive calycle 

 Medusa somewhat more ailvanced, from the abactinal pole . 

 Young Medusa still further advanced than Fig. 193 . 



Laodicea cellularia 



One of the lips of the actinostome 



GoNiONEMUs VERTEXS, attached by its tentacles 



The same in motion, natural size ...... 



Base of a contracted tentacle ....... 



A portion of the genital organs ...... 



One of the chymiferous tubes and half the digestive cavity . 



Profile of Melicertum CAMPANULA, natural size . 



Profile view of a very young Melicertum cani])annla . 



Half the disk of the same, seen from the actinal pole 



Yoimg Melicertum, having only four completely formed chymiferous tubes 



Same, seen from the abactiual pole ...... 



Magnified view of the two chyinifi'rous tidies and genital glands 

 Mode of carrying the lips of actinostome ..... 



A, 



g) 



102 



102 



104 



1(14 



104 



1(15 



lOG 



107 



107 



109 



110 



110 



111 



112 



113 



113 



113 



114 



114 



114 



114 



115 



115 



116 



116 



117 



117 



117 



117 



119 



119 



120 



120 



120 



122 



123 



123 



123 



123 



124 



124 



125 



125 



125 



126 



127 



127 



129 



129 



130 



130 



130 



131 



132 



132 



132 



133 



133 



133 



