10 BULLETIN 106, UNIT 3D STATES NATIONAL MUSEUM. 



1917. 



CANU, FERDINAND, and BASSLER, RAY S. A Synopsis of American Early Tertiary Cheilostome 



Bryozoa. Bulletin 96 U. S. National Museum, 87 pp.. 6 pis. Present a classification and 



describe the following new genera and the genotype of each whenever the species is new : 



Acanthocella, Acantliionella, Adenifera, Aechmella, Bathosella, Cribrendoecium, Cystisella, 



Dacryonelln, DidymoscUa, Diploplioleos, EnoplostomcUa, Floridi/nella, Gastropella, Hip- 



padenella, Hippellozoon. Hippomenella, Hippozeugosella, Kleidionella, Kymella, Leiosella, 



Membraniporidra, Membrendoecium, Mctracolposa, Metradolium, Metrocrypta, Metro- 



periella, Ochetosella, Odontionella, Ogiralina, Otionella, Perigastrclla, Plagiosmittia, 



Periporosella, RectOnychocella, Shizaropsis, Scliizcllozoon, Schizemiella, Schizobathysella, 



Schizomavella, Schizopodrella, Schizortiwsecos, Betnihaswellia, tStamenocella, Stepliano- 



sella, Stomachetosclla, Tremotoichos, Triphyllosoon, Tubucella, Vclumella, Vibracellina. 



SYNONYMIC REFERENCES. 



The following alphabetic list gives the present position of all the North Ameri- 

 can early Tertiary bryozoa described previously to 1917. This list supplements the 

 chronological catalogue of papers printed on pages 7 to 10. By comparison with 

 this catalogue it will be noted that the larger part of the old species has been 

 identified, with the exception of those contained in the work of De Gregorio. 1890. 

 This author's descriptions and illustrations are so poor and his localities so indefinite 

 that in the majority of cases it has been impossible to consider his species as 

 recognizable. 



REFERENCES OF PREVIOUSLY DESCRIBED NORTH AMERICAN EARLY TERTIARY BRYOZOA. 



Batopora convii-aHa De Gregorio, 1890. Not recoguized. 



Biflustra (?) supradiiliia De Gregorio, 1890. Not recognized. 



Biflustra torta Gabb and Horn, 1862. See Euritina torta. 



Cavaria dumosa IJlrich, 1901. See Partretocycloecta duinosa. 



Cellepora cycloris Gabb and Horn, 1862. See Perlgaxtrclla cycloris. 



Cellepora inornata Gabb and Horn, 1862. See Trypostcga inornata. 



Celleporaria jigula De Gregorio, 1890. Not recoguized. 



Cribrilina crassula Ulrich, 1901. See Membra-niporella crasaula. 



Cribrilina modesta Ulrich, 1901. Sc-e Alembraniporvlla modestit. 



Crisia laeta De Gregorio. Not recognizable. 



Cupularia discoidca Lea. Not recognized. 



Discoflustrcllaria bouei Gabb and Horn, 1862. See Trocliopora bouei. 



Discosparsa, varians Ulrich, 1901. See Diaperoecia varians. 



EntaJophoru amocna De Gregorio, 1890. See Heteropora amoena. 



Entalophora proboscidoidcs Gabb and Horn, 1862. Possibly Mecynoecia proboscidea. 



Eschara digitata Morton, 1834. See Costinopleura diyitata. 



Eschara incumlieiis, Lousdale, 1845. See Schizopodrella vimitiea. 



Eschara linca I^onsdale, 1845. See Schizopodrella linea. 



Eschara ovalis Gabb and Horn, 1862. Not recoguized. 



Eschara petiolus Lousdale, 1845. See Hippodiplosetta petiolus. 



Eschara spongiopxis De Gregorio, 1890. See Cyclicopora spongiopsis. 



Eschara texta Gabb and Horn, 1862. See Schisopodrella viminea. 



Eschara tubulata Lousdale, 1845. See Smittina Ivbulata. 



I'xrlKint riniinca Lonsdale. 1845. See Schizopodrcllii viminea. 



