120 PALEONTOLOGY OF NEW YORK. 



Genera DISC IN A, Lamarck, 1819; ORBICULA, Sowerby, 1822; 

 ORBICULOIDEA, D'Orbignv, 1847; SCHIZOTRETA, Kutorga, 

 1848; ORBICULOIDEA, Davidson, 1856; D I S C I N I S C A, Dall, 

 1871 ; L I N D S T R CE M E L L A , sub-gen. nov. ; CEHLERTELLA, 

 SUB-GEN. NOV. ; RCEMERELLA, sub-gen. nov. ; D I S C I N A , of 

 authors generally. 



I'LATE IV E, FIGS. 1-31 ; PLATE IV F, FIGS. 1-3J ; PLATE IV K, FIGS. 4,23,24. 



1842. Orbicula, Vanoxbm. Geology of New York ; Report Third District. 



1843. Orbicula, Hall. Geology of New York ; Report Fourth District. 

 1847. Orbicula, Hall. P;ilaeonto!ogy of New Y'ork, vol. i. 



1852. Orbicula, Hall. Paleontology of New Y'ork, vol. ii. 



1858. Disnna, Shdmakd. Tians. St. Louis Academy of Science. 



1859. Dhcina, Meek and Harden. Proceedings Philadelphia Academy Natural Science. 



1859. Discina, Hall. PaliBontnlogy of New Y'ork, vol. iii. 

 1S60. Discina, Shdmard. Trans. St. Louis Academy of Science. 



1860. Discina, Hall. Thirteenth Rept. N. Y*. State Cab. Nat. History. 



1860. Dixcina, Hall. Canadian Naturalist and Geologist. 



1861. Discina, Shdmard. American Joui-nal of Science. 



1862. Discina, Billings. Palseozoic Fossils, vol. i. 



1862. Discina, Hall. Fifteenth Rept. N. Y. State Cal). Nat. History. 



1862. Discina, White. Proceedings Bostcm Society Natural History. 



lS6a. Discina, Hall. Sixteenth Rept. N. Y. State Cab. N.at. History. 



1865. Discina, A. Winchell. Proceedings Philadelphia Academy Natui-al Science. 



1865. Discina, McChesnby. Trans. Chicago Academy Sciences. 



1867. Discina, Hall. Pala;ontology of New Y'ork, vol. iv. 



1868. Discina, Hartt. Dawson's Acadian Geology. 



1870. D'lscina, A. Winchell. Proceedings American Philosophical Society, vol. xii. 



1872. Discina {Orbicaloideai), Hall and Whitfield. Twenty-fourth Rept. N. Y. State Mus. Nat. Hist. 



1872. OrUculoidea, Meek. Rept. Palseoiitology Eastern Nebraska. 



1873. D'mriiui, Meek and Worthb.v. Geological Survey of Illinois, vol. v. 



1873. Orbiculoidea, Hall. Twenty-third Rept. N. Y. State Cab. Nat. History. 



1874. Discina, Rathbdn. Bulletin Buffalo Society Natural History. 



1874. Discina, Derby. Bulletin Cornell University, vol. i. No. 2. 



1875. Discina (Orbiculoideaf), Hall and Whitfield. Twenty-seveutli Rept. N. Y. State Mus. Nat. 



History. 



1875. D'lscina [Orbiculoidea), Meek. Geological Survey of Ohio ; PalfBontology, vol. ii. 



1875. Discina, Nichomon. Rept. Palaeontology Province Ontario. 



1878. D'lscina, Ulricu. Joui-nal Cincinnati Society Natural Histoi-y. 



1878. Discina, Barrel'. Ann. New Y'ork Academy of Sciences. 



1878. Discina, Ratubux. Proceedings Bo.ston Society Natural History. 



1878. Discina, Rathbu.v. Bulletin Buffalo Society Natural History. 



1878. DisciJia, Daw.so.v. Acadian Geology, Third Editicm. 



1880. Discina. Whitfibld. Annual Report Geological Survey of Wisconsin. 



1882. Disdiia, Whitfield. Descriptions of New Species of Fossils from Ohio. 



1882. Discina, Whitfield. Geology Wisconsin, vol. iv, pt. 3, Paleontology. 



1882. Discina, Ringdebekg. Amei-ican Naturalist, Septembei-. 



