X 
CONTENTS. 
Systematic descriptions — Continued . 
Order Cheilostomata Busk— Continued. 
Suborder Ascophora Levinsen, 1909 — Continued. 
Family Smittinidae Levinsen, 1909 — Continued. Page. 
Genus Cystisella Canu and Bassler, 1917 479 
Porella Gray, 1848 479 
Umbonula Hincks, 1880 494 
Phoceana Jullien, 1903 495 
Bryocryptella Cossman, 1906 496 
Hippadenella Canu and Bassler, 1917 497 
Family Reteporidae Smitt, 1867 500 
Genus Retepora Imperato, 1599 500 
Hippellozoon Canu and Bassler, 1917 505 
Schizellozoon Canu and Bassler, 1917 . 505 
Triphyllozoon Canu and Bassler, 1917 506 
Rhynchozoon Hincks, 1891 506 
Schizotheca Hincks, 1877 508 
Lepraliella Levinsen, 1916 509 
Family Galeopsidae Jullien, 1903 509 
Genus Galeopsis Jullien, 1903. . 510 
Schizaropsis Canu and Bassler, 1917 515 
Haswellia Busk, 1884 516 
Semihaswellia Canu and Bassler, 1917 517 
Gigantopora Ridley, 1881 519 
Gephyrophora Busk, 1884 521 
Tessaradoma Norman, 1868 521 
Tremotoichos Canu and Bassler, 1917 523 
Family Hippopodinidae Levinsen, 1909 524 
Genus Cheilopora Levinsen, 1909 525 
Hippopodina Levinsen, 1909 532 
Metrarabdotos Canu, 1914 533 
Watersipora Neviani, 1895 537 
Family Tubucellariidae Busk, 1884 539 
Genus Tubucellaria D’Orbigny, 1852 .. 542 
Subgenus Tubucella Canu and Bassler, 1917 546 
Genus Tubiporella Levinsen, 1909 549 
Siphonicytara Busk, 1884 549 
Family Catenicellidae Busk, 1852 550 
Genus Catenieella D’Orbigny, 1852 550 
Family Adeonidae Jullien, 1903 550 
Genus Meniscopora Gregory, 1893 555 
Bracebridgia MacGillivray, 1886 557 
Adeona (Lamouroux, 1816) Levinsen, 1909 560 
Adeonella (Busk, 1884) Waters, 1888 561 
Adeonellopsis MacGillivray, 1886 563 
Dimorphocella Maplestone, 1903 571 
Laminopora Michelin, 1842 571 
Family Phylactellidae Canu and Bassler, 1917 572 
Genus Phylactella Hincks, 1880 573 
Perigastrella Canu and Bassler, 1917 576 
Hemicyclopora Norman, 1804 586 
Mastigophora Hincks, 1880 586 
Schizobathysella Canu and Bassler, 1917 590 
