898 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Orthis trieenaria — Continued. 



Canada, 1859, p. 39, pi. 9, figs. 1-4.— Hall, Geol. Wisconsin, 1, 1862, p. 42, figs. 

 8-11.— Chapman, Canadian Jour., n. s., 6, 1862, p. Ill, fig. 91; ibid., 8, 1863, 

 p. 199, fig. 184.— Billings, Geol. Canada, 1863, p. 167, fig. 151.— Chapman, 

 Expos. Min. and Geol. Canada, 1864, p. 115, fig. 92; p. 171, fig. 184.— Safford, 

 Geol. Tennessee, 1869, p. 275, fig. 9.— Shaler, Mem. Geol. Surv. Kentucky, 1, 

 3d Mem., 1876, p. 36.— Hall, 2d Ann. Rep. New York State Geol., 1883, pi. 35, 

 figs. 1-5.— Walcott, Mon. U. S. Geol. Surv., 8, 1884, p. 74, pi. 11, fig. 4.— 

 Miller, N. A. Geol. Pal., 1889, p. 360, fig. 592.— Lesley, Geol. Surv. Pennsyl-- 

 vania, Rep. P 4, 1889, p. 538, figs.— Hall and Clarke, Pal. New York, 8, pt. 1, 

 1892, pp. 191, 193, 221, 228, pi.. 5, figs. 9-14.— Winchell and Schuchert, Geol. 

 Minnesota, 3, 1893, p. 418, pi. 32, figs. 18-23.— Keyes, Geol. Surv. Missouri, 5, 

 1895, p. 60, pi. 39, fig. 4.— Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 3, 

 1897, p. 175.— Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 293; Proc. U. S. 

 Nat. Mus., 22, 1900, p. 156.— Ruedemann, Bull. New York State Mus., 49, 

 1902, p. 24.— Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 151, pi. 9. figs. 

 18-21.— Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 250, fig. 301a-c. 



Orthis disparilis Conrad, Proc. Acad. Nat. Sci. Philadelphia, 1, 1843, p. 333. — 

 Hall, Pal. New York, 1, 1847, p. 119, pi. 32, fig. 4.— Emmons, Amer. Geology, 

 1, pt. 2, 1855, p. 194, pi. 9, fig. 4a-c— Hall, Geol. Wisconsin, 1, 1862, p. 435.— 

 Billings, Geol. Canada, 1863, p. 130, fig. 60.— Lesley, Geol. Surv. Pennsyl- 

 vania, Rep. P 4, 1889, p. 513, figs.— Hall and Clarke, Pal. New York, 8, pt. 1, 

 1892, pp. 191, 221, 228. 



Platystrophia trieenaria Hall, 36th Rep. New York State Mus. Nat. Hist., 1884, 

 p. 75, pi. 3, fig. 1. 



Orthis testudinaria? Owen, Geol. Expl. Iowa, Wisconsin, and Illinois, 1844, pi. 

 15, fig. 11. 



Orthis plicatella White (not Hall), Wheeler's Expl. and Survey west 100th Merid., 

 4, 1875, p. 72, pi. 4, fig. 10. 



Black River: Mineral Point, etc., Wisconsin; Iowa; Minnesota; Kentucky; 

 Tennessee; New York; Canada; etc. 



Stones River: Central Tennessee. 



Plesiotypes.— Cat. Nos. 8553, 17252, U.S.N.M. (White and Walcott). 



Orthis(?) trinucleus Hall. 



Orthis trinucleus Hall, Pal. New York, 2, 1852, p. 58, pi. 20, fig. 8. 

 Clinton: Wayne County, New York. 



Orthis triplicatella Meek. See Plectorthis fissicosta triplicatella. 



Orthis(?) tritonia Billings. 



Orthis Tritonia Billings, Pal. Fossils, 1, 1865, p. 76, fig. 69 (adv. sheets 1862); 

 Geol. Canada, 1863, p. 231, fig. 244.— Hall and Clarke, Pal. New York, 8, 

 pt.l, 1892, p. 217, pi. 7A, figs. 12, 13.— Lesley, Geol. Surv. Pennsylvania, 

 Rep. P 4, 1889, p. 538, figs. 



Ozarkian? (Levis — erratics): Point Levis, Quebec. 



Orthis uberis Billings. See Rhipidomella uberis. 



Orthis vespertilio Sowerby. 



Orthis vespertilio (Sowerby) Kayser, Palseontographica, Suppl. 3, 1876, p. 27, 



pi. 3, figs. 22, 23. 

 Ordovician: Europe; Potrero de los Angulos, etc., Argentina. 



Orthis whitfieldi Winchell. See Plectorthis (Austinella) whitfieldi. 



Orthis (Plectorthis) wichitaensis Walcott. See Eoorthis wichitaensis. ' 



