XVIII 
ILLUSTRATIONS. 
Page. 
Fig. 147. Genus Lepraliella Levinsen, 1916 511 
148. Genera of the Galeopsidae Jullien, 1903 512 
149. Genus Galeopsis Jullien, 190.3 513 
150. Genus Haswellia Busk, 1884 516 
151. Genus Semihaswellia Canu and Bassler, 1917 517 
152. Genus Gigantopora Ridley, 1881 519 
153. Genus Gephyrophora Busk, 1884 520 
154. Genus Tessaradoma Norman, 1868 522 
155. Genus Cheilopora Levinsen, 1909 525 
156. Genus Hippopodina Levinsen, 1909 532 
157. Genus Metrarabdotos Canu, 1914 534 
158. Genus Watergipora Neviani, 1895 538 
159. Anatomical structure of the Tubucellariidae Busk, 1884 540 
160. Genus Tubucellaria D’Orbigny, 1852 542 
161. Genus Tubiporella Levinsen, 1909 548 
162. Genus Siphonicytara Busk, 1884 549 
163. Anatomical structure of the Adeonklae Jullien, 1903* 552 
164. Genera of Adeonidae Jullien, 1903 554 
165. Genus Meniscopora Gregory, 1893 555 
166. Genus Bracebridgia MacGillivray, 1886 558 
167. Genus Adeona Lamouroux, 1816 560 
168. Genus Adeonella (Busk, 1884) Waters 1888 561 
169. Genus Adeonellopsis MacGillivray, 1886 563 
170. Genus Dimorphocella Maplestone, 1903 571 
171. Larva of Phylactellidae Canu and Bassler, 1917 572 
172. Genera of the Phylactellidae Canu and Bassler, 1917 572 
173. Genus Phylactella Hincks, 1880 573 
174. Genus Perigastrella Canu and Bassler, 1917. ..... A ; 576 
175. Genus Mastigophora Hincks, 1880 -. 588 
176. Anatomical structure of the Celleporidae Busk, 1852 594 
177. Genera of the Celleporidae Busk, 1852 597 
178. Genus. Schismopora MacGillivray, 1888 599 
179. Genus Osthimosia Jullien, 1888 601 
180. Genus Costazzia Neviani, 1895 603 
1JB1. Genus Holoporella Waters, 1909 604 
182. Holoporella pisiformis, new species 608 
183. Cellepora ramulosa Busk, 1854 614 
184. Cellepora sardonica Waters, 1879 615 
185. Cellepora janthina group • 615 
186. Genus Acanthionella Canu and Bassler, 1917 : 616 
187. Genus Fedora Jullien, 1882 623 
188. Genus Stichoporina Stoliczka, 1861 625 
189. Genus Orbitulipora Stoliczka, 1861 628 
190. Genus Batopora Reuss, 1867 629 
191. Genus Diplotaxis Reuss, 1867 629 
192. Genus Conescharellina D’Orbigny, 1851 630 
193. Genus Bipora Whitelegge, 1887 631 
194. Genus Flabellipora D’Orbigny, 1852 631 
195. Genus Mamillopora Smitt, 1872 _ 632 
196. Microscopic structure of tubes 635 
197. Structure of the cylindrical tubes 636 
