26 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Division 2. MALACOSTEGA Levinsen, 1909 

 Family EUCRATIIDAE Hincks, 1880 



Scruparia Hincks, 1857; Eucratea (Lamouroux, 1812) Hincks, 1880 

 (Notamia Fleming, 1828, preoccupied). 



Family GEMELLARIIDAE Busk, 1859 



Gemellaria Van Beneden, 1845; Brettia Dyster, 1858; Corynoporella 

 Hincks, 1888; Bugulella Verrill, 1879. 



Family BIFLUSTRIDAE Smitt, 1872 



Acanthodesia Canu and Bassler, 1920; Cupuladria Canu and 

 Bassler, 1920; Adenifera Canu and Bassler, 1917; Trochopora D 'Or- 

 bigny, 1853; (Heteractis Gabb and Horn, 1862); Otionella Canu 

 and Bassler, 1917; Heliodoma Calvet, 1907; Conopeum Norman, 

 1903; Quadricellaria D'Orbigny, 1851; Cellarinidra, Canu and Bass- 

 ler, 1927 (Cellarina D'Orbigny, 1851, preoccupied); Membranipora 

 Blainville, 1830, and Membraniporina Levinsen, 1909 (artificial group 

 for unplaced Membraniporae) ; Biflustra D'Orbigny, 1852 (a general 

 term of no generic value); Pseudostega Brydone, 1918. 



Family ELECTRINIDAE D'Orbigny, 1851 



Nitscheina Canu, 1900, Electra Lamouroux, 1816 (Electrina and 

 Reptelectrina D'Orbigny, 1851, Annulipora Gray, 1848); Pyripora 

 D'Orbigny, 1852; Heterooecium Hincks, 1892; Herpetopora Lang, 

 1914; Tretosina, Canu and Bassler, 1927; Mystriopora Lang, 1915; 

 Tendra Nordman, 1839; Aspidelectra Levinsen, 1909; Taphrostoma 

 Canu, 1905; Rhammatopora, Charixa, and Distelopora, all of Lang, 

 1915, are placed here with doubt. 



Family FLUSTRIDAE Smitt, 1867 



Flustra Linnaeus, 1761 (subgenera Carbasea Gray, 1848, and 

 Chartella Gray, 1848); Sarsiflustra Jullien, 1903; Spiralaria Busk, 

 1861; Retiflustra Levinsen, 1909; Kenella Levinsen, 1909; Heterqflus- 

 tra Levinsen, 1909 (artificial group for unplaced Flustridae). 



Family HINCKSINIDAE Canu and Bassler, 1927 



Hincksina Norman, 1903; Membrendoecium Canu and Bassler, 

 1917; Biselenaria Gregory, 1893 (Diplotaxis Reuss, 1867, preoccu- 

 pied); Setosellina Calvet, 1906; Aplousina, Canu and Bassler, 1927; 

 Cribrendoecium Canu and Bassler, 1917; Ogivalina Canu and Bassler, 

 1917; Vibracellina Canu and Bassler, 1917; Antropora Norman, 1903. 



