376 SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. [bull. 87. 



Schizophoiia tulliensis ( Vauuxem). Tully (Dev.). 



Ortliis tuUiLiisis Vauuxem, Geol. N. Y. ; Rep. Third Dist., 1842, p. 164, fig. 2.— 



Hall, Pal. New York, IV, 1867, p. 55, pi. 7, tig. 5.— Walcott, Mou. U. S. 



Geol. Survey, YIII, 1884, p. 115, pi. 2, fig. 12.— Williams, Bull. Geol. Soc. 



America, I, 1890, p. 492, pi. 12, fig. 1(5. 

 Orthis resupiuata Hall (iion Alartin), Geol. N. Y. ; Rep. Fourth Dist., 1843, p. 215, 



Jig. 2. 

 Orthis (Schizophoria) tuUit-usiH Hall, .Second Ann. Kep. N. Y. State Geol., 1883, 



pi. 3t), figs. 25-29. 

 Schizophoria tulliensis Hall and Clarke, Pal. Kew York, VIII, Pt. I, 1892, pp. 



212, 226, pi. 6. figs. 25-29. 

 Loc. Tully, Tinkers Falls, and Ovid, New York; Eureka district, Nevada. 



SCHIZOTRETA Kutoiga. Genotype S. elliptica Kutorga. 



Schizotreta Kutorga, Verhand. Kais. Min. Gessel. zu St. I'etersburg, Vll, 1818, 

 p. 273.— Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 135, 169.— 

 Winchell and Sehuchert, Minnesota Geol. Survey, III, 1893, p. 365. — Hall and 

 Clarke, Eleventh Ann. Rep. N. Y. State Geologist, 1894, p. 257. 



Schizotreta conica (Dwight). Trenton (Ord.). 



Orbiculoidea conica Dwight, American Jour. Sci., 3d ser., XIX, 1880, p. 452, pi. 



21, figs. 1-11. 

 Schizotreta conica Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 126, 



135, pi. 4E, figs. 6-8; pi. 4F, fig. 7. 

 Loc. Near Newburg, New York. 



Schizotreta minutula Wincheli and Scliucbert. Lorraine (Ord.). 



Schizotreta minutula Winchell and Schuchert, Minnesota Geol. Survey, III, 1893, 



p. 366, fig. 28. 

 Loe, Near Granger, Minnesota. 



Schizotreta ovalis Hall and Clarke. Trenton (Ord.). 



( )rl)iculoi(lea (Schizotreta) ovalis Hall and Clarke, Pal. New York, VIII, Pt. I, 



1892, p. 177, pi. 4E, figs. 4, 5. 

 Loc. Midtlleville, New York. 



Schizotreta pelopea (Billings). Trenton and Lorraine (Ord.). 



Disciua pelopea Billings, Pal. Fossils, I, 1862, p. 52, fig. 56; — Geol. Canada, 1863, 

 p. 159, fig. 124. 



Discina concordeusis Sardeson, Bull. Minnesota Acad. Nat. Sci., Ill, 1892, p. 328, 

 pi. 4, figs. 13, 14. 



Schizotreta pelopea, Winchell and Schuchert, Minnesota Geol. Survey, III, 1893, 

 p. 365, pi. 29, figs. 26-28. 



Loc. Montreal, Canada; Mantorville, Old Concord, and Spring Valley, Minne- 

 sota; Dubu(iue, Iowa; Neenah, Wisconsin; iu the Utica at Ottawa, Canada 

 (Ami). 



Schizotreta tenuilamellata (Hall). Niagara (Sil.). 



Orbicula teuuilauiellata Hall, Pal. New York, II, 1852, p. 2.50, pi. 53, fig. 3. 

 Discina forbesi Nicholson (non Davidson), Pal. Prov. Ontario, 1875, p. 62. 

 Discina solitaria Ringueberg, American Naturalist, 1882, p. 175, figs. a-e. 

 Disciua clara Spencer, Bull. Univ. State Missouri, 1, 1884, p. 56; — Trans. St. 



Louis Acad Sci., IV, 1886, p. 606, i)l. 8, fig. 5. 

 Schizotreta tenuilamellata Bcecher, American .Tour. Sci., 3d ser., XLI, 1891, p. 



357, pi. 17, fig. 11. 

 Orbiculoidea (Schizotreta?) tenuilamellata Hall and Clarke, Pal. Now York, 



VIII, Pt. I, 1892, pp. 127, 135, ])1. 4E, figs. 9-11 ; pi. 4F, figs. 2-6. 

 Loc. Lockport, New York; Hamilton, Ontario, and Arisaig, Nova Scotia (Ami). 



