TABLE OF CONTENTS IX 



Systematic descriptions — Continued. 



Order Cheilostomata Busk — Continued. 



Suborder Ascophora Levinsen — Continued. Page 



Family Celleporidae Busk, 1852 416 



Genus Aulopocella Maplestone, 1903 417 



Genus Tegminula Jullien, 1882 417 



Genus Omalosecosa Canu and Bassler, 1925 417 



Genus Hippoporidra Canu and Bassler, 1927 418 



Genus Hippotrema Canu and Bassler, 1927 418 



Genus Holoporella Waters, 1909 419 



Genus Osthimosia Jullien, 1888 429 



Genus Schismopora MacGillivray, 1888 430 



Genus Costazia Neviani, 1895 431 



Genus Cellepora Linnaeus, 1767 435 



Family Liriozoidae Levinsen, 1909 435 



Genus Liriozoa Lamarck, 1812 436 



Genus Pasythea (Lamouroux, 1812), Busk, 1884 436 



Genus Dittosaria Busk, 1866 437 



Family Catenicellidae Busk, 1852 438 



Genus Vittaticella Maplestone, 1900 438 



Genus Catenicellopsis J. B. Wilson, 1880 438 



Genus Cornuticella Canu and Bassler, 1927 441 



Genus Pterocella Levinsen, 1909 441 



Genus Strongylopora Maplestone, 1899 441 



Genus Claviporella MacGillivray, 1895 444 



Genus Scuticella Levinsen, 1909 444 



Genus Costaticella Maplestone, 1900 445 



Genus Digenopora Maplestone, 1899 449 



Genus Cribricellina Canu and Bassler, 1927 449 



Genus Calpidium Busk, 1852 449 



Genus Strophipora MacGillivray, 1895 (Subgenera 

 Microstomaria, Stenostomaria, and Ditaxipora Mac- 

 Gillivray, 1895) 449 



Family Catenariidae D'Orbigny, 1850 453 



Genus Catenaria D'Orbigny, 1850 453 



Genus Halysis Norman, 1909 453 



Genus Huxleya Dyster, 1858 454 



Family Sclerodomidae Levinsen, 1909 454 



Genus Sclerodomus Levinsen, 1909 456 



Genus Systenopora Waters, 1904 456 



Genus Cellarinella Waters, 1904 457 



Family Onchoporidae Busk, 1884 458 



Genus Onchopora Busk, 1852 462 



Genus Calwellia W. Thompson, 1858 462 



Genus Onchoporella Busk , 1 852 463 



Genus Onchoporoides Ortmann, 1850 463 



Genus Ichthyaria Busk, 1884 464 



Family Euthyridae Levinsen, 1909 464 



Genus Urceolipora MacGillivray, 1881 464 



Genus Euthyris Hincks, 1882 464 



Genus Plcurotoichus Levinsen, 1909 464 



Suborder Hexapogona Canu and Bassler, 1927 466 



Family Chaperiidae Jullien, 1888 469 



Genus Chaperia Jullien, ISSN 469 



