40 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Cheiloporina Canu and Bassler, 1923. Family Hippopodinidae. 



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



Chorizopora Hincks, 1880. Family Hippothoidae. 



Chrossotoechia Canu, 1925. Synonym of Monoporella 



Cianotremella Canu, 1911. Family Hippopodinidae. 



Cigclisula Canu and Bassler, 1927. Family Stomachetosellidae. 



Claviporella MacGillivray, 1895. Family Catenicellidae. 



Codonella Canu and Bassler, 1928. Family Smittinidae. 



Coeleschara Busk, 1860. Nomen nudum. 



Coelopora Lang, 1917. Family Pelmatoporidae. Cretaceous cribrimorph. 



Coleopora Canu and Bassler, 1927. Family Petraliidae. 



Collarina Jullien, 1888. Family Costulae. 



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



Columnaria Levinsen, 1909. See Levinsenella 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. 

 Copidozoum Harmer, 1926. Synonym of Callopora. 

 Corbulipora MacGillivray, 1895. Family Costulae. 

 Cornucopina Levinsen, 1909 Family Bicellariellidae. 

 Cornuticella Canu and Bassler, 1927. Family Catenicellidae. 

 Corymbopora Lang, 1916 (preoccupied). See Corymboporella. 

 Corymboporella Lang, 1917. Family Andrioporidae. Cretaceous cribrimorph. 

 Corynoporella Hincks, 1888. Family Scrupariidae. 

 Corynostylus Canu and Bassler, 1919. Family Calpensiidae. 

 Cosciniopsis Canu and Bassler, 1927. Family Galeopsidae. 

 Coscinopleura Marsson, 1887. Family Coscinopleuridae. 

 Costaticella Maplestone, 1899. Family Catenicellidae. 

 Costazia Neviani, 1895 {Sinidpelta Levinsen, 1909). Family Celleporidae. 

 Costicella Levinsen, 1909. Synonym of Costaticella. 

 Costula Jullien, 1880. 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. 

 Crassimarginatella Canu, 1909. Family Alderinidae. 

 Crateropora Levinsen, 1909. Family Setosellidae. 

 Crepidacantha Levinsen, 1909. Family Crepidacanthidae. 

 Crepis Jullien, 1882. Family Chlidoniidae. 

 Cribella Jullien and Calvet, 1903. Genotype, C. nova Jullien and Calvet, 1903. 



Family Escharellidae. 

 Cribrendoecium Canu and Bassler, 1917. Family Hincksinidae. 

 Cribricella Canu, 1902. Synonym of A deonellopsis. 

 Cribricella Levinsen, 1909. See CribHcellina. 

 Cribricelhna Canu and Bassler, 1927 {CHbricella Levinsen, 1909). Family 



Catenicellidae. 

 C-ibrilina Gray, 1848. Family Alderinidae. The word is also used by different 



authors to designate costulate species imperfectly studied and by students 



who do not admit the recent classification. 

 Crisma Van Beneden, 1850. Synonym of ScrupocellaHa. 

 Crisularia Gray, 1848. Synonym of Bugula. 

 Cryptella Jullien, 1903 (preoccupied). See Bryocryptella. 

 Cryptosloma Marsson, 1nn7. Pal. Abh., vol. 4, p. 96. Type and only species. 



C. gastroporum Marsson, 1887. Cretaceous. Incompletely studied. 

 Cryptostomaria Canu and Bassler, 1927. Family Ccllariidae. 



