VIII CONTENTS. 



Systematic descriptions Continued. 



Order Cheilostomata Busk Continued. 



Suborder Anasca Levinsen Continued. 



Division II. Coilostega Levinsen, 1909 Continued. Page. 



Family Steganoporellidae Levinsen, 1909 259 



Genus Steganoporella Smitt, 1873 259 



Siphonoporella Hincks, 1880 265 



Family Thalamoporellidae Levinsen, 1909 268 



Genus Thalamoporella Hineks, 1887 268 



Division III. Pseudostega Levinsen. 1909 269 



Family Cellariidae Hinoks, 1880 269 



Genus Cellaria Authors 272 



Cianotremella Canu, 1911 274 



Family Coscinopleuridae Canu, 1913 275 



Genus Coscinopleura Marsson, 1887 275 



Macropora MacGillivray, 1895 ' 276 



Quadricellaiia D'Orbigny, 1850 279 



Suborder Asrophora Levinsen, 1909 280 



The Costulae (family Cribrilinidae, Hineks, 1880 ) 280 



Genus Membraniporella Smitt, 1873 L'S I 



Cribrilina Gray, 1848 290 



Puellina Jullien, 1886 293 



Distansescharella D'Orbigny, 1852 299 



Gephyrotes Norman, 1903 300 



Metracolposa Canu and Bassler, 1917 304 



Corbulipora MacGillivray, 1895 308 



Acanthocella Canu and Bassler, 1917 309 



Cribrendoecium Canu and Bassler, 1917 310 



Arachnopusia Jullien, 1886 311 



Figularia Jullien, 1886 313 



Aspidelectra Levinsen, 1909 317 



Family Acroporidae Canu, 1913 317 



Genus Acropora Reuss, 1869 318 



Gastropella Canu and Bassler, 1917 320 



Pachytheca Canu, 1913 :',2 1 



Beisselina Canu, 1913 322 



Family Hippothoidae Levinsen, 1909 325 



Genus Hippothoa (Lamouroux, 1821 ) Hincks, 1880 326 



Trypostega Levinsen, 1909 327 



Haplopoma Levinsen, 1909 332 



Chorizopora Hincks, 1880 333 



Dacryopora Lang, 1914 333 



Harmeria Norman, 1903 334 



Family Escharellidae Levinsen, 1909 334 



Group I. Schizoporellae Canu and Bassler, 1917 335 



Genus Sehizopodrella Canu and Bassler, 1917 338 



Stephanosella Canu and Bassler, 1917 343 



Lacerna Jullien, 1888 345 



Buffonella, Jullien, 1888 348 



Arthropoma Levinsen, 1909 351 



Phonicosia Jullien, 1888 352 



Schizobrachiella, new genus 353 



Schizomavella Canu and Bassler, 1917 353 



