xxii LIST OF ILLUSTRATIONS 



FIG. PAGB 



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 



146. Corallium rubrum 196 



147. Astrsea pallida 196 



148. Pennatula sulcata . 197 



149. 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 



161. 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 f orskalii '. . . . . . .221 



173. Ctenoplana kowalevskii 221 



174. Tjalfiella 222 



175. Hydroctena salenskii 225 



176. Sections of embryos of Actinia and Beroe 226 



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



178. Dicyema paradoxum with infusoriform embryos .... 228 



179. , vermiform 228 



