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



Schizophoria tulliensis (Vauuxem). Tully (Dev.). 



Ortliis tullionsis Vannxem, Geol. N. Y. ; Rep. Third Dist., 1842, p. 164, tig. 2. — 



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



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



America, I, 1890, p. 492, pi. 12, fig. 16. 

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



fig. 2. 

 Orthis (Schizophoria) tulliensis Hall, Second Ann. Rep. N. Y. State Geol., 1883, 



^1. 36, ligs. 25-29. 

 Schlzophoria tulliensis Hall and Clarke, Pal. New York, VIII, Pt. I, 1892, pp. 



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

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



SCHIZOTRETA Kutorga. Genotype S. elliptica Kutorga. 



Schizotreta Kutorga, Verhand. Kais. Min. Gessel. zu St. Petersburg, VII, 1848, 

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

 Winchell and Schuchert, 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 Winclieli and Scliucliert. 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.). 



Orlnculoidea (Schizotreta) ovalis Hall and Clarke, Pal. New York, VIII, Pt. I, 



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

 Loc. Middleville, New York. 



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



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

 p. 159, fig. 124. 



Discina concordensis Sardeson, Bull. Miunesota Acad. Nat. Sci., Ill, 1892, p. 328, 

 pi. 4, figs. 13, 14. 



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

 p. 36.5, pi. 29, figs. 26-28. 



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

 sota; Dubuque, Iowa; Neenah, Wisconsin; in the Utica at Ottawa, Canada 

 (Ami). 



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



Orbicula tenuilamellata Hall, Pal. New York, II, 1852, p. 250, 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, pi. 8, fig. 5. 

 Schizotreta tenuilamellata Beecher, American Jour. Sci., 3d ser., XLI, 1891, p. 



357, pi. 17, fig. 11. 

 Orbiculoidea (Schizotreta?) tenuilamellata Hall and Clarke, Pal. New Y^ork, 



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

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



