280 SYNOPSIS OF AMERICAN FOSSIL HRACHIOPODA. [hull. 87. 



Orbiculoidea manhattanensis (Meek ami Hayden). Upper Carboniferous. 



Disiiiiii iiiiiiibiittensis Meek and Ilaydeu, Proc. Acad. Nat. Sci. Philadelphia, 



1859, p. 25. 

 Loc. Near Manhattan. Kausas. 



Orbiculoidea marginalis (Wliitfield). Hamiltoii (Dev.). 



I)i.s(in;i marginalis Wliitlicld, Ann. Kep. Gool. Snrvey Wisconsin, 1880, p. 70;— 

 Geol. Survey Wisconsin, IV, 1882, p. 325, pi. 25, lig. 11. ■ 



( )rbi(nl()i(lea niar.ninalis Hall and Clarke, Pal. New York, VIII, Pt. 1, 1892, p. 127, 

 ld.4F. fig. 17. 



Loc. Milwaukee, Wisconsin. 



Orbiculoidea minuta (Hall). Marcellus-Hamilton (Dev.). 



Orbicula minuta Hall, Geol. N. Y. ; Rep. Fourth Dist., 1843, p. 180, iig. 9. 

 Disciua minuta Hall, Pal. New York, I\', 1867, p. Ifi, pi. 1, Iig. 16.— Walcott, Hon. 



U. S. Geol. Survey, VIII, 1884, p. 112, pi. 13, fig. 5.— Whitfield, Aunals N. Y. 



Acad. Sci., V, 1891, p. 547, pi. 11, figs. 5, 6;— Geol. Ohio, VII, 1895, p. 442, pi. 7, 



figs. 5, 6. 

 Orbiculoidea minuta Beecher, American Jour. Sci., 3d ser., XLI, 1891, p. 356, pi. 



17, iigs. 5-7;— American .Jour. Sci., 3d ser., XLIV, 1892, p. 150, pi. 1, figs. 4-6. 

 Loc. Avon, NeAv York; Delaware County, Ohio; near Eureka, Nevada. 



Orbiculoidea missouriensis (Sliumarcl). Upper Carboniferous. 



Disciua missouriensis Shumard, Trans. St. Louis Acad. Sci., 1, 1858, p. 221. 

 Discina uitida? Meek and Worthen (non Phillips), Geol. Survey Illinois, V, 1873, 



p. 572, pi. 25, fig. 1. 

 Discina nitida White, Thirteenth Rep. State Geologist Indiana, 1884, p. 121, j)!. 



25, fig. 10.— Keycs, Proc. Acad. Nat. Sci. Philadelphia, 1888, p. 226.— Hall and 



Clarke, Pal. New York, VIII, Pt. I, 1892, p. 131, pi. 4F, figs. 23-28.— Keyes, 



Geol. Survey Missouri, V, 1895, p. 39, pi. 35, fig. 6. 

 Discina meekana Whitfield, Annals N. Y. Acad. Sci., II, 1882, p. 228. — Herrick, 



Bull. Denisou Univ., II, 1887, ]». 145, pi. 2, fig. 8.— Whitfield, Annals N. Y. 



Acad. Sci., V, 1891, p. 598, pi. 15, figs. 1-3;— Geol. Ohio, VII, 1895, p. 483, pi. 



11, figs. 1-3. 

 Loc. Lexington, Missouri; Illinois; Carbon Hill and Flint Ridge, Ohio; Des 



Moines, Iowa; Vermilion County, Indiana. 

 Ohs. This species is not D. uitida Phillips. It dillers from it in form and in the 



muscular scars. 



Orbiculoidea (?) munda (Miller and Gurley). Upper Carboniferous. 



Discina munda Miller and Gurley, Bull. Illinois State Mus. Nat. Hist., 3, 1893, p. 



71, pi. 7, iigs. 6, 7. 

 Loc. Kausas City, Missouri. 

 Obs, This species may bo a Liugulodiscina, but since the ventral valve is 



unknown satisfactory generic reference can not be made. 



Orbiculoidea neglecta (Hall). Clicmunj? (Dev.). 



Discina neglecta Hall, Sixteenth Rep. N. Y. State Cab. Nat. Hist., 1863, p. 29; — 



Pal. New York, IV, 1867, p. 24, pi. 1, figs. 12, 13. 

 Loc. Ithaca, Now York. 



Orbiculoidea newberryi Meek = Liugulodiscina newberryi. 

 Orbiculoidea nitida (Phillips). Upper Carboniferous. 



Orbicula nitida Phillips, Geol. Yorkshire, II, 18.36, p. 221, pi. 9, figs. 10-13. 



f Discina nitida Walcott, Mon. II. S. (Jeol. Survey, VIII, 1884, p. 213, pi. 7, fig. 4. 



Xoc. England; White Pine district, Nevada. 



