26 PROCEEDINGS OF THE NATIONAL MUSEUM vol.69 



Celleporella Gray, 1848. Genotype, Cellepora hyallna Linnaeus, 1768. Not rec- 

 ognizable. Genotype is type of Hippothoa. 



Celleporella Norman, 1868. Preoccupied. Dropped by author in 1903. 



Celleporina Gray, 1848. Not defined so as to be recognized. 



Celleporina D'Orbigny, 1852. Bry. Cret., p. 212. Pr-eoccupied and also not 

 recognizable. 



Gellularia Pallas 1766. Not recognized. See Harmer, 1923. 



Cercaripora Fisher, 18G6. Synonym of Aetea. 



Chaperia JuUien, 1881. Family Chaperiidae. 



Characodoma Maplestone, 1900. Family Escharellidae. 



Charixa Lang, 1915. Family Electrinidae. 



Chartella Gray, 1848 (subgenus of Fltistra). Family Flustridae. 



Chaunosia Busk, 1867. Synonym of Beanla. 



Cheilonella Koschinsky, 1885. Fossil possibly close to Psilopsella, new genus. 

 Perhaps Phylactellidae. 



Cheilopora Levinsen, 1909. Family Hippopodinidae. 



Cheiloporina Canu and Bassler, 1923. Family Hippopodinidae. 



Chlidonia (Savigny, 1811) Lamouroux, 1824. Family Cblidoniidae. 



Chorizopora Hincks, 1880. Family Hippothoidae. 



Chrossotoechia Canu, 1925. Synonym of Monoporella. 



Cianotremella Canu, 1911. Family Hippopodinidae. 



Cigclistila, new genus. Family Stomachetosellidae. 



Claviporella MacGillivray, 1895. Family Catenicellidae. 



Coeleschara Busk, 1860. Nomen nudum. 



Coelopora Lang, 1917. Family Pelmatoporidae. Cretaceous cribrimorph. 



Coleopora, new genus. Family Petraliidae. 



Collarina JuUien, 1888. Family Costulae. 



Colletosia JuUien, 1886. Family Costulae. Genus requiring further study. 



Columnarla Levinsen, 1909. See Levinseuella Harmer, 1926. 



Columnotheca Marsson, 1887. Type and only species, C. cribrosa Marsson, 

 1887. Family Acroporidae. Cretaceous. 



Conescharellina D'Orbigny, 1852. Family Conescharellinidae. 



Conopeum Norman, 1903. Family Biflustridae. 



Copldozoum Harmer, 1926. Synonym of Callopora. 



Corbulipora MacGillivray, 1895. Family Costulae. 



Cornucopina Levinsen, 1909. Family Bicellariellidae. 



Cornuticella, new genus. Family Catenicellidae. 



Corymbopora Lang, 1916 (preoccupied). See Corymboporella. 



Corymboporella Lang, 1917. Family Andrioporidae. Cretaceous cribrimoi-pl* 



Corynoporella Hincks, 1888. Family Scrupariidae. 



Corynostylus Canu and Bassler, 1919. Family Calpensiidae. 



Cosciniopsis, new genus. Family Galeopsidae. 



Coscinopleura Marsson, 1887. Family Cosciiiopleuridae. 



Costaticella Maplestone, 1899. Family Catenicellidae. 



Costazzia Neviani, 1895 (Siniopelta Levinsen, 1909). Family Celleporidae. 



Costicella Levinsen, 1909. Synonym of Costaticella. 



Costula JuUien, 1886. Family Costulae. Genotype, Escharella arge D'Orbigny, 

 1851. Cretaceous. Genotype of doubtful position. 



Cothurnicella Wyville Thompson, 1858. Synonym of Chlidonia. 



Craspedozoum MacGillivray, 1895. F. roborata group of Flabellaris. 



Crassimarffinatella Canu, 1909. Family Alderinidae. 



Crateropora Levinsen, 1909. Family Setosellidae. 



Crepidacantha Levinsen, 1909. Family Crepidacanthidae. 



