ILLUSTRATIONS. 
XIX 
Page. 
Fig. 198. Structure of tubes and apertura 638 
199. Tubes with facets 640 
200. Tubes with rhomboidal orifice 640 
201. Diaphragms .' 641 
202. Tergopores 642 
203. Firmatopores 642 
204. Nematopores 643 
205. Dactylethrae 643 
206. Cancelli 644 
207. Vacuoles 645 
208. Mesopores 646 
209. Methods of gemmation 647 
210. Growth of zoarium •. 649 
211. Branching of zoarium 649 
212. Origin of zoarium 650 
213'. Protoecium.... 650 
214. Fissiparity of primary embryo 651 
215. Forma Stomatopora Broun, 1825 653 
216. Forma Berenicea Lamouroux, 1821 669 
217. Forma Diastopora Lamouroux, 1821 672 
218. Forma Spiropora Lamouroux, 1821 ’. 674 
219. Family Heteroporidae Pergens and Meunier, 1886 676 
220. Forma Ceriopora Goldfuss, 1827 678 
221. Forma Reptomulticava D’Orbigny, 1852 680 
222. Forma Heteropora de Blainville, 1830 681 
223. Forma Multicrescis D’Orbigny, 1852 684 
224. Genus Fungella Hagenow, 1851 685 
225. Genus Biflabellaria Pergens, 1894 685 
226. Genus Oncousoecia Canu, 1918 687 
227. Families of Ovicellata •. 688 
228. Peristomoecia, new genus;"] 693 
229. Anatomy of the family Crisiidae Johnston, 1847 698 
230. Family Crisiidae Johnston, 1847 _ 700 
231. Genus Crisia Lamouroux, 1816 703 
232. Genus Crisidia Milne Edwards, 1838 708 
233. Genus Plagioecia Canu, 1918 709 
234. Desmeplagioecia, new genus . # 718 
235. Genus Macroecia Canu, 1918 723 
236. Anatomy of the family Mecynoeciidae Canu, 1918 724 
237. Genus Mecynoecia Canu, 1918 , 724 
238. Mecynoecia (Entalophora) proboscidea Milne Edwards, 1838 725 
239. Anatomy of the Diaperoeciidae'Canu, 1918 739 
240. Genus Diaperoecia Canu, 1918 740 
241. Genus Diplosolen Canu, 1918 746 
242. Genus Crisulipora Robertson, 1910 1 748 
243. Desmediaperoecia, new genus 751 
2,44. Family Tubuliporidae Johnston, 1838 . 754 
245. Genera of the Tubuliporidae 756 
246. Oeciopores of Tubulipora 757 
247. Genus Tubulipora Lamark, 1816 758 
248., Platonea, newjgenus 759 
249. Centronea, new genus 761 
