X LIST OF THE WOOD-CUTS. 



83. Young Hydxarium 65 



84. Dtnamena pumila 66 



85. Magnified portion of Pig. 84 66 



86. Dyphasia ko&aoea 67 



87. Medusa of Lafoea 67 



88. Colony of Ooryne mirabilis (Agassiz) 68 



89. Magnified head of Pig. 88 (Agassiz) 68 



90. Pree Medusa of Ooryne (Agassiz) 68 



91. TUREIS VESICARIA 69 



92. BotTGAINVILLIA SUPEEOILIABIS 70 



93. Hydrarium of Bougainvillia 70 



94. 95, 96. Medusa buds of Pig. 93 71 



97. Young Medusa just freed from the Hydroid . . . " . .71 



98. TtTBULARiA OotraHOTTTi (Agassiz) 72 



99. Cluster of Medusae of Pig. 98 (Agassiz) 72 



100. Pemale colony of Hydeaotinia poltolina (Agassiz) ... 73 



101. Male colony of the same (Agassiz) 73 



102. Unsymmetrical Medusa of Htbocodon peolieee (Agassiz) . . 74 



103. Medusa bud of Hybooodon (Agassiz) 74 



104. Hybocodon Hydrarium (Agassiz) 74 



105. Dtsmorphosa fulqtjeans 75 



106. Proboscis of Pig. 105 with young Medusae .... 75 



107. Young Nanomia caea 76 



108. Nanomia with rudimentary Medusae 76 



109. Nanomia somewhat older than Pig. 108 77 



110. Heart-shaped swimming bell of Nanomia 77 



111. Cluster of Medusae with tentacles having pendent knobs . . 78 



112. Magnified pendent knob 79 



113. Medusa with corkscrew-shaped tentacles ... .79 



114. Medusa with simple tentacle .80 



115. Adult Nanomia 81 



116. Oil float of Nanomia 82 



117. Phtsalia Aeethusa (Agassiz) 83 



118. Bunch of Hydras (Agassiz) 84 



119. Cluster of Medusae (Agassiz) 84 



120. Vblella mutioa (Agassiz) . . 84 



121. Pree Medusa of Velella (Agassiz) 84 



122. Pttchobena laotba . 86 



128. Ovary of Ptychogena 87 



124. Stnapta tenuis 95 



125. Anchor of Synapta . . . ■ 96 



126. Cattdina arenata 97 



127. cuvibeia squamata 98 



128. Young Cuvieria 99 



129. Cuvieria somewhat older than Pig. 128 99 



130. Pentaota frondosa 100 



