SCHDCHEBT.] 



INDEX AND BIBLIOGRAPHY. 279 



Orbiculoidea illinoisensis (Miller and Gurley). Upper Carboniferous. 



Discina illiuoieiisis Miller and Gurley, Bnll. Illinois State Mus. Nat. Hist., 3, 1893, 



p. 70, pi. 7, figs. 2-5. 

 Loc. Knox anil Peoria counties, Illinois. 

 Ohs. Closely related to O. convexa. 



Orbiculoidea jervisensis (Barrett). Oriskany (Dev.). 



Discina jervensis Barrett, Annals N. Y. Acad. Sci., I, 1878, p. 121. 

 Loc. Port Jervis, New York. 



Orbiculoidea keokuk (Gurley). Keokuk (L. Garb.). 



Discina keoknk Gurley, New Carb. Fossils, 1884, p. 6. 

 Loc. Crawfordsville. Indiana. 



Orbiculoidea lamellosa Hall. Trenton and Lorraine (Ord.). 



Orbicula lamellosa Hall (non Broderip, 1833), Pal. New York, I, 1847, p. 99, pi. 



30, fig. 10. 

 Orbicula truncata Emmons, American Geology, Pt. II, 1855, p. 200, fig. 62. 

 Discina truncata Emmons, Manual of Geol., 18(50, p. 99. 

 Orbiculoidea lamellosa? Winchell and Schuchert, Minnesota Geol. Survey, III, 



1893, p. 364, pi. 29, fig. 25. 

 Orbiculoidea lamellosa Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 



4E, fig. 12. 

 Discina circe Billings. Pal. Fossils, I, 1862, p. 51, fig. 55;— Geol. Canada, 1863, 



p. 159, fig. 125. 

 Xoc. Middleville and Lowville, New York; Bellville and Ottawa, Canada; 



Spring Valley, Minnesota. 

 Ohs. Orbicula lamellosa Broderip, is the type species of Discinisca, and Hall's 



name will therefore stand. 



Orbiculoidea lodiensis (Vanuxem). Genesee (Dev.), 



Orbicula lodensis Vanuxem, Geol. N. Y. ; Eep. Third Dist., 1842, p. 168, fig. 1.— 



Hall, Ibidem, Eep. Fourth Dist., 1843, p. 223, fig. 1. 

 Discina lodensis Hall, Pal. New York, IV, 1867, p. 22, pi. 1, fig. 14; pi. 2, fig. 35.— 



Rathbun, Bull. Buftalo Soc. Nat. Sci., I, 1874, p. 257;— Proc. Boston Soc. Nat. 



Hist., XX, 1879, p. 17.— Walcott, Men. U. S. Geol. Survey, VIII, 1884, p. 112, 



pi. 2, fig. 5.— Clarke, Bnll. U. S. Geol. Survey, 16, 1885, p. 24.— Whitfield, 



Annals N. Y. Acad. Sci.,V, 1891, p. 547, pi. 11, fig. 7;— Geol. Ohio, VII, 1895, 



p. 442, pi. 7, fig. 7. 

 Discina sp. a A. Ulrich, N. Jahrb. fiir Mineral., Beilageband, VIII, 1892, p. 81, pi. 



5, fig. 10. 

 Orbiculoidea lodensis Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 4F, 



fig. 21. 

 ioc. Lodi, etc.. New York ; White Pine district, Nevada; Erere, Province of Para, 



Brazil; Chahuarani, Bolivia. In the Marcellus shale of Delaware County, 



Ohio (Whitfield). 



Orbiculoidea lodiensis media Hall. Marcellus-Chemung (Dev.). 



Discina media Hall, Sixteenth Rep. N. Y. State Cab. Nat. Hist., 1863, p. 27; — 



Pal. New York, IV, 1867, p. 20, pi. 2, figs. 25-29.— Walcott, Mon. U. S. Geol. 



Survey, VIII, 1884, p. 113. 

 Orbiculoidea media Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 4E, 



figs. 15-17. 

 Loc. Seneca and Canandaigua lakes, New York; Chemung group, Troupsburg, 



New York. 



Orbiculoidea magnifica (Herrick). Waverly (L. Garb.). 



Discina magnifica Herrick, Bull. Geol. Soc. America, II, 1891, p. 46, pi. 1, fig. 17. 

 Loc, Wooster, and Ashland County, Ohio. 



