scnrciiEnT.] INDEX AND BIBLIOGRAPHY, 281 



Orbiculoidea numulus TIall and Clarke. Waterliine (Sil.). 



Orbiruloidca luunulus Hall and Clarke, Pal. Now York, VIII, Pt. I, 1892, y>. 178, 



pi. 4E, lig. 11. 

 Loc. Marshall, New York. 



Orbiculoidea parmulata (Ilall). Medina (Sil.). 



Orbicula parmulata Hall, Geol. New York ; Rep. Fourt h Dist., 1843, p. 48, lig. 4 ; — 



Pal. New York, II, 18.52, pi. 4, fig. 3. 

 Loc. Medina and Lockport, New York. 



Orbiculoidea patellaris (A. Winchell). Kinderhook (L. Carb.). 



Disciua patellaris A. Wiiiclioll, I'roc. Acad. Nat. Sci. Philadelphia, 1863, p. 4. 

 Loc. Burlington, Iowa. 



Orbiculoidea i)leuiitos Meek^Llnj^ulodisciua ])leiirites. 

 Orbiculoidea imlcbra Hall=Orbiculoidea bertzeri. 



Orbiculoidea randalU Hall. Hamilton (T)ev.). 



Discina randalli Hall, Sixteenth Kep. N. Y. State Cab. Nat. Hist., 1863, p. 25;— 



Pal. New York, IV, 1.S67, p. 18, pi. 2, fig. 34. 

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



tig. 18. 

 Loc. Schoharie, New York. 



Orbiculoidea saffordi (A. Wincbell). Lower Carboniferous. 



Discina saftordi A. Winchell, (jeol. Tennessee, 1869, p. 443; — Proc. American 



Philosophical Soc, XII, 1870, p. 248. 

 Loc. "Just above Black Slate," Hickman County, Tennessee. 



Orbiculoidea sampsoni (Miller). Obouteau (L. Carb.). 



Discina sampsoni Miller, Seventeenth Rep. State Geol. Indiana, 1891, p. 80, pi. 



13, figs. 10-12. 

 Loc. Sedalia, Missouri. 



Orbiculoidea seneca (Hall). Hamilton (Dev.). 



Discina seneca Hall, Sixteenth Rep. N. Y. State Cab. Nat. Hist., 1863, p. 26; — 



Pal. New York, IV, 1867, p. 20, pi. 2, figs. 23, 24. 

 Loc. East shore of Seneca Lake, New York. 



Orbiculoidea subplana (Hall). Arisaig (Sil.). 



Discina teuuilamellata var. subplana Hall, Canadian Nat. Geol., V, 1860, p. 144. — 



Dawson, Acadian Geol., 3d cd., 1878, p. 595. 

 Loc. Arisaig, Nova Scotia. 



Orbiculoidea subtrigonalis (McCbesney). Upper Carboniferous. 



Ihsciua subtrigouulis McChesney, New Pal. Fossils, 1865, jt. 97. 



Discina trigoualis McChesney, Ibidem, 1865, pi. 2, fig. 19; — Trans. Chicago Acad. 



Sci., 1, 1868, p. 24, pi. 2, fig. 19. 

 Loc. Lasalle, Illinois. 



Orbiculoidea tenuilineata (Meek and Hayden). Ujiper Carboniferous. 



Discina teuuiliueata Meek and Hayden, Proc. Acad. Nat. Sci. Philadelphia, 1859, 



p. 25. 

 Loc. Cottonwood Creek, Kansas. 



Orbiculoidea tenuistriata (Ulricb). Utica (Ord.). 



Discina tenuistriata Ulrich, Jour. Cincinnati Soc. Nat. Hist., I, 1878, p. 96, pi. 4, 



fig. 10. 

 Loc. Covington, Kentucky. 



