xx-i LIST OF ILLUSTRATIONS 



no. PAGK 



132. Lucernaria .... .177 



133. Pericolpa quadrigata . .178 



134. Nausithoe . .179 



135. Charybdsea marsupialis . . . .180 



136. Pilema pulmo - 181 



137. Pelagia noctiluca, development .... ... 182 



138. Tealia crassicornis, dissection and transverse section . 184 



139. Diagrammatic sections of Sea-anemone ... .186 



140. Tealia crassicornis, section of tentacle ... . 188 



141. Nematocysts of Sagartia 188 



142. Section of mesenteric filament of Sagartia 189 



143. Transverse sections of embryos of Actinia . ... 191 



144. Zoanthus sociatus ... . . 195 



145. Hartea elegans . . .... . .195 



14ii. Corallium rubrum . . 196 



147. Astrsea pallida . . 196 



148. Pennatula sulcata . 197 



14!). Tubipora musica ... . 197 



150. Edwardsia claparedii . . . . . . . . . .198 



151. Antipathes ternatensis ... 198 



152. Parantipathes and Schizopathes . . . . .199 



153. Minyas ... .200 



154. Alcyonium palmatum .......... 200 



155. Gorgonia verrucosa ... . .... 201 



156. Structure of simple coral 203 



157. Dendrophyllia and Madrepora . . . . 204 



158. Adamsia palliata . . .... 206 



159. Hormiphora plumosa ... 208 



160. ,, dissection and transverse section . . . 209 

 101. ,, ,, diagrammatic sections . . . . .211 



162. ,, ,, section of branch of tentacle .... 212 



163. ,, ,, sense-organ . .... 213 



164. Ovum of Lampetia . . . 214 



165. Segmentation of oosperm in Ctenophora ...... 215 



166. Development of Ctenophora . . . ... 215 



167. Development of Callianira . . * 215 



168. ,, (later stages) . . 216 



169. Three Cydippida . .219 



170. Deiopea kaloknenota .... 220 



171. Cestus veneris . . . 220 



172. Beroe forskalii . . . 221 



173. Ctenoplana kowalevskii . 221 



174. Tjalficlla . . . 222 



175. Hydroctena salcnskii . . . ^25 



176. Sections of embryos of Actinia and Beroe ... . 226 



177. Diagram illustrating the mutual relationships of the Coelenterata . 227 



178. Dicyema paradoxvim with infusoriform embryos .... 228 



179. ,, ,, ,, vermiform 



