50 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Prosotopora Lang, 1916. Family Rhacheoporidae. Creticeous cribrimorph. 

 °rostomaria MacGillivray, 1895. Fossil. Not recognized without more study. 



Family Prostomariidae MacGillivray, 1895. 

 Pseudoflustra Bidenkap, 1897. Family Escharellidae. 

 Pseudostega Brydone, 1918. Family Biflustridae. 

 Psileschara Busk, 1860. Family Reteporidae. 

 Psilopsella, Canu and Bassler, 1927. Family Phylactellidae. 

 Pterocella Levinsen, 1909. Family Catenicellidae. 

 Puellina Jullien, 1886. Family Costulae. 

 Pumiscaria Gabb and Horn, 1862. Jour. Acad. Nat. Sci. Phila., ser. 2, vol. 5, 



1862, p. 179. Genotype, "Alveolites glomeratus" Say. Not recognizable. 

 Pyriflustrella D'Orbigny, 1853. Bry. Cret., p. 569. First species Hippothoa 



tuberculum Lonsdale, 1845. Not recognized. Founded on poor interpreta- 

 tion of Lonsdale's figure. 

 Pyriflustrina D'Orbigny, 1853. Bry. Cret., p. 580. Type species, P. elegans 



D'Orbigny, 1853. Cretaceous. 

 Pyripora D'Orbigny, 1852. Family Electrinidae. 

 Pyriporella Canu, 1911. Family Alderinidae. Cretaceous. 

 Pyrulella Harmer, 1926. Family Alderinidae. 

 Quadricellaria D'Orbigny, 1851. Family Biflustridae. 

 Quadricellaria Sars, 1863 (preoccupied). Synonym of Tessaradoma. 

 Ragionula Canu and Bassler, 1927. Family Stomachetosellidae. 

 Ramphonotus Norman, 1894. Family Alderinidae. 

 Rectonychocella Canu and Bassler, 1917. Family Opesiulidae. 

 Reginella Jullien, 1886. Type, Cribrilina furcata Hincks, 1882. Family 



Costulae. 

 Repiadeonella Busk, 1884. Genotype, R. violacea (Johnston). Synonym of 



Adeona. 

 Reptelectrina D'Orbigny, 1852. Bry. Cret., p. 333. Synonym of Electra. 

 Reptescharella D'Orbigny, 1852. Bry. Cret., p. 464. First species described and 



figured, R. (Escharina) lorieri D'Orbigny, 1852. Cretaceous cribrimorph. 

 Reptescharellina D'Orbigny, 1852. Bry. Cret., p. 451. Selected genotype, 



R. horrida D'Orbigny, 1852. Idem, p. 456, pi. 715, figs. 7-9. Cretaceous. 

 Reptescharinella D'Orbigny, 1852. Bry. Cret., p. 429. Genotype selected by 



Lang Cellepora subgranvlata Hagenow, 1851. Cretaceous. 

 Reptescharipora D'Orbigny, 1853. Bry. Cret., p. 489. Genotype, R. meudonensis 



D'Orbigny, 1853. PL 719, figs. 17-19. Costulae. Cretaceous. Type lost. 

 Reptocelleporaria D'Orbigny, 1852. Bry. Cret., p. 421. Genotype, R. cretacea 



D'Orbigny, 1852. Cretaceous. 

 Reptoflustra D'Orbigny, 1852. Bry. Cret., p. 327. First species, Flustra im- 



pressa Lamouroux=C alpensia impressa. Not recognized. 

 Reptojlustrella D'Orbigny, 1853. Bry. Cret., p. 570. First species, (described 



but not figured) R. cenomania D'Orbigny. Cretaceous. Not recognized. 

 Reptofluslrina D'Orbigny, 1853. Bry. Cret., p. 581. First species, R. marginata 



D'Orbigny, 1853. No generic characters. Synonym of Callopora. 

 Replolatereschara D'Orbigny, 1852. Bry. Cret., p. 417. Both recent species 



(Eschara annularis Moll and Replolatereschara capensis D'Orbigny) referred 



here by D'Orbigny are now placed elsewhere. No generic characters given. 

 Reptolunulilcs D'Orbigny, 1852. Bry. Cret., p. 356. A form of Lnnulites in 



which growth has been upon large objects and therefore appears incrusting. 

 Reptoporella D'Orbigny, 1853. Bry. Cret., p. 474. Type species, R. regularis 



D'Orbigny, 1853, Idem, p. 475, pi. 717, figs. 6, 7. Cenomanian of France. 



Cretaceous cribrimorph. See Lang, 1921, p. lxv. 



