38 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Avicella Van Beneden, 1848. Synonym of Bugula. 



Avicularia Gray, 1848. Synonym of Bugula. 



Bactrellaria Marsson, 1887. Pal. Abh., vol. 4, p. 59. Type and only species, B. 

 rugica Marsson, 1887. Idem, p. 59, pi. 5, fig. 18. Cretaceous. Figure 

 incomplete. 



Bactridium Reuss, 1848. Not recognized. Scrupocellaria (part) and Hippo- 

 zeugosella (part). 



Balantiostoma Marsson, 1887. Perhaps a member of the Escharellidae. Creta- 

 ceous. 



Baptopora Lang, 1916. Family Pelmatoporidae. Cretaceous cribrimorph. 



Barroisina Jullien, 1886. (Probably a synonym of Pliophloea.) Family 

 Costulae. 



Balhosella Canu and Bassler, 1917. Family Escharellidae. 



Baihypora MacGillivray, 1895. Included in Amphiblestrum. 



Bathystoma Marsson, 1887. Cretaceous. Perhaps Parmulariidae. 



Batopora Reuss, 1867. Family Orbituliporidae. 



Balrachopora Lang, 1916. Family Pelmatoporidae. Cretaceous cribrimorph. 



Beania Johnston, 1840. Family Beaniidae. 



Beissehna Canu, 1913. Family Acroporidae. 



Bicellaria Blainville, 1830. See Bicellariella. 



Bicellariella Levinsen, 1909 (Bicellaria Blainville, 1830, preoccupied). Family 

 Bicellariellidae. 



Bicellarina Levinsen, 1909. Family Bicellariellidae. 



Bicupularia Reuss, 1864. Fossil. Perhaps Orbituliporidae. Further studies 

 are necessary. 



Bifaxaria Busk, 1884. Family Bifaxariidae Busk, 1884. 



Biflustra D'Orbigny, 1852 Bry. Cret., p. 241. Biflustra is simply a bifoliate free 

 form of Anasca and has no standing as a genus. 



Bijrons MacGillivray, 1860. Synonym of Dimetopia. 



Bigemellaria MacGillivray, 1895. Synonym of Tetraplaria. 



Bimicroporella Canu, 1904. Synonym of Microporella. 



Bipora Whitelegge, 1887. Family Conescharellinidae. 



Biselcnaria Gregory, 1893. Proposed in place of Diplolaxis Reuss, 1867, pre- 

 occupied. Genotype, Diplolaxis placentula Reuss. Applies to the bilamellar 

 group of Vibracellina Canu and Bassler, 1917. Family Hincksinidae. 



Bitectipora MacGillivray, 1895. Genotype, B. lineata MacGillivray, 1895. A 

 fossil genus incompletely studied. Family Bitectiporidae MacGillivray, 

 1895. 



Bracebridgia MacGillivray, 1886. Famih Adeonidae. 



Brettia Dyster, 1858. Family Scrupariidae. 



Bryocryptella Cossman, 1906. Family Smittinidae. 



Buffonella Jullien, 1888. Family Escharellidae. 



Buffonellaria Canu and Bassler, 1927. Family Escharellidae. 



Bugula Oken, 1815. Family Bugulidae. 



Bugularia Levinsen, 1909. Family Bugulidae. 



Bugulella Verrill, 1879. Allied to Brettia (see Harmer, 1923). 



Bugulina Gray, 1848. Synonym of Bugida. 



Bugulopsis Verrill, 1880. Synonym of Tricellaria. 



Bulbipora MacGillivray, 1895. Fossil. Can not be recognized without further 

 study. Perhaps Reteporidae with Caberoides Canu, 1918. 



Caberea Lamouroux, 1816. Family Scrupocellaridae. 



Caberiella Levinsen, 1909. Synonym of Amastigia. 



Caberoides Canu, 1910. Genotype C. canaliculala Canu, 1910. Fossil. Perhaps 

 Reteporidae. 



