46 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Later oflustrella D'Orbigny ; 1853. Bry. Cret., p. 568. Type species, L. com- 



planata, D'Orbigny, 1853. Cretaceous. Not recognized. 

 Lateroflustrcllaria D'Orbigny, 1853. Bry. Cret., p. 512. Type L. hexagona 



D'Orbigny, 1853. Cretaceous. 

 Leieschara M. Sars, 1862, Genotype, L. coarctata Sars., 1862. Synonym of 



Myriozoum. 

 Leiosella Canu and Bassler. 1917. Family Stomachetosellidae. 

 Lekythoglena Marsson, 1887. Pal. Abh., vol. 4, p. 90. Genotype L. ampullacea 



Marsson, 1887. Idem. p. 90, fig. 7. Cretaceous. Family Lekythoglenidae 



Marsson, 1887. Referred by Lang to Andrioporidae. Cretaceous cribrimorph. 

 Lekythopora MacGillivray, 1882. Family Lekythoporidae. 

 Lepralia Johnston, 1838. Family Escharellidae. Formerly applied to almost 



any incrusting form but now employed for unplaced species of Hippo- 



porae. See Lang 1917 and 1921. 

 Lepraliella Levinsen, 1909. Family Reteporidae. 

 Lepralina Kuhn, 1925. Family Costulae. 



Leptocheilopora Lang, 1916. Family Lagynoporidae. Cretaceous cribrimorph. 

 Levinsenella Harmer, 1926. Family Farciminariidae. 

 Levinseniula Cossman, 1920. Synonym of Porella. 

 Licornia Van Beneden, 1850. Synonym of Scrupocellaria. 

 Liriozoa Lamarck, 1816 (Levinsen 1909). Family Liriozoidae. 

 Lobopora Levinsen, 1909 (subgenus of Adeonellopsis). Family Adeonidae. 

 Loricaria Lamouroux. 1821. Synonym of Eucralea. 

 Loricula Cuvier, 1830. Synonym of Eucralea. 

 Lunularia Busk, 1884. Family Opesiulidae. 

 Lunulites Authors. Family Opesiulidae. A general term of nomenclature 



for free turbinate conical forms. 

 Lyrula Jullien, 1888. Family Costulae. 

 Macropora MacGillivray, 1895. Family Aspidostomatidae. 

 Malakosaria Goldstein, 1881. Genotype, M. pholaramphos Goldstein, 1881. 



(Onchopora sinclairi Busk, 1881). Synonym of Onchopora (fide Busk, 



1884). 

 Malleatia Jullien and Calvet, 1903. Family Smittinidae. 

 Mamillopora Smitt, 1872. Family Mamilloporidae. 

 Manzonella Jullien, 1888. Family Thalamoporellidae. 

 Maplestonia MacGillivray, 1884. Family Scrupocellariidae. 

 Marginaria Roemer, 1841. Cretaceous. Family Alderinidae. The nature of 



the pores figured by authors is not known. 

 Marguetta Jullien and Calvet, 1903. Family Smittinidae. 

 Marsillea Neviani, 1895. Synonym of Porella. 

 Marssonopora Lang, 1914. Family Alderinidae. 

 Mastigophora Hincks, 1880. Family Crepidacanthidae. 

 Megapora Hincks, 1877. Family Aspidostomatidae. 

 Melicerita Milne-Edwards, 1836. Family Cellariidae. 

 Melicertina Ehrenberg, 1839. Synonym of Melicerita. 

 Membranicellaria Levinsen, 1902. Family Membranicellariidae. 

 Membranipora Blainville, 1830. Family Biflustridae. The word Membran- 



ipora is employed by many authors as a general term to designate the 



Malacostega or as a general term for unplaced Membraniporae. 

 Membraniporella Smitt, 1873. Family Alderinidae. 

 Membraniporidra Canu and Bassler, 1917. Family Alderinidae. 

 Membraniporina Levinsen, 1909. Family Biflustridae. An artificial genus for 



Membraniporae incompletely known. 

 Membrendoecium Canu and Bassler, 1917. Family Hincksinidae. 



