sxii LIST OF ILLUSTRATIONS 



FIG, PACK 



lliH. Aurelia aurita, development . . . 174 



l'.H\. Tessera princeps . . , 178 



131. Luceinaria . 178 



132. Pericolpa quadrigata . 179 



133. Xausithde . . . .180 



134. Charybdfea niarsupialis . . 181 



135. Pilema puhno ... . 183 



136. Pelagia iiootiluca, development . . . 184 



137. Tealia crassicornis, dis.section and tran.sverse section . , 186 



138. Diagrammatic sections of Sea-anemone . 188 



139. Tealia crassicornis, section of tentacle ... . 190 



140. Nematocysts of Sagartia . . 190 



141. Section of mesenteric filament of Sagartia 191 

 li2. Transverse sections of embryos of Actinia . 19,3 



143. Zoanthus sociatus . 197 



144. Hartea elegans . . X97 



145. Corallium rubrum . , 19g 



146. Astriea pallida . 19g 



147. Pennatula sulcata . I99 



148. Tubipora rausica . I99 



149. Edwardsia claparfedii 200 



150. Cirripathes anguina , . 201 



151. Fenja mirabilis . . . . 202 



152. Minyas . 202 



153. Alcyonium palmatum 203 



154. Gorgonia verrucosa 204 



155. Structure of simple coral . 206 



156. Dendrophyllia and Madrepora 207 



157. Adamsia palliata . 209 

 1.58. Hormiphora plumosa . 211 

 159- ■, „ dis.section and transver.se .section 212 

 160. „ „ diagrammatic sections . . . 214 

 If^l- >. ■, section of branch of tentacle . . 215 



162. „ ,, sense-organ ... 216 



163. Ovum of Lampetia . . 217 



164. Segmentation of oosperm in Ctenophora 218 



165. Development of Ctenophora . . . 218 



166. Development of Callianira .... 218 



167. ,, ,, (later stages) . 219 



168. Three Cydippida .... 222 



169. Deiopea kaloknenota . 223 



170. Cestus veneris 



171. Beroe forskalii 



172. Ctenoplana kowalevskii 225 



173. Sections of embryos of Actinia and Beroe . . .228 



174. Diagram illustrating the mutual relationships of the Coelenterata '. 229 



175. Dicyema paradoxum with infusoriform embryos . . .230 

 ' " " >> vermiform ,, ... 230 



223 

 224 



