1152 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Schuchertella tenuis Continued. 



Denison Univ., 2, 1887, p. 105, pi. 8, figs. 31, 32, 38. Nettelroth, Kentucky 



Fossil Shells, Mem. Kentucky Geol. Surv., 1889, p. 142. Lesley, Geol. Surv. 



Pennsylvania, Rep. P 4, 1890, p. 1098, figs. 



Orthothetes tenuis Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 255. 

 Strophomena (Orthothetes) tenuis Foerste, Geol. Ohio, 7, 1895, p. 568, pi. 27, 



figs. 31, 32, 38. 



Niagaran: Waldron, Indiana (Waldron); Near Louisville, Kentucky (Louisville). 

 Upper Medinan (Brassfield): Dayton, Ohio; Hanover, Indiana. 

 Ple*iotype.Gxt. No. 51329, U.S.N.M. (Nettelroth). 



SCHUCHERTIA Gregory. Genotype: Palasterina stellata Billings. 



Schuchertia Gregory, Geol. Mag., dec. 4, 6, 1899, p. 351. Schuchert, Bull. U. S. 



Nat. Mus., 88, 1915, p. 195. 

 Trentonaster Sturtz, Verh. naturh. Ver. preuss. Rheinl., etc., 56, 1899, p. 224. 



(Genotype: Palasterina stellata Billings.) 

 Palasterina Billings (part) (not McCoy) Geol. Surv. Canada, dec. 3, 1858, p. 76. 



Schuchertia laxata Schuchert. 



Schuchertia laxata Schuchert, in Freeh, Cat. Foss., 1, Anim., pt. 3, 1914, p. 38 



(nom. nud.); Bull. U. S. Nat. Mus., 88, 1915, p. 198, pi. 32, fig. 3; pi. 33, 



figs. 2, 3. 

 Richmond (Waynesville) : Near Waynesville, Hamilton, and Oxford, Ohio. 



Schuchertia ordinaria Schuchert. 



Schuchertia ordinaria Schuchert, in Freeh, Foss. Cat.. 1, Anim., pt. 3, 1914, p. 



38 (nom nud.); Bull. U. S. Nat. Mus., 88, 1915, p. 199. 

 Upper Medinan (Girardeau) : Alexander County, Illinois. 



Schuchertia stellata (Billings). 



Palasterina stellata Billings, Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, 

 p. 290; Geol. Surv. Canada, dec. 3, 1858, p. 76, pi. 9, figs, la, lb. Wright, 

 Mon. Brit. Foss. Echinod., Oolitic, 2, pt. 1, Pal. Soc., 1862, p. 27, fig. lb on 

 p. 26. Chapman, Canadian Jour., n. s., 6, 1861, p. 517. Quenstedt, Petre- 

 factenkunde Deutschlands, 1, 4, 1876, p. 74, pi. 92, fig. 34. 



Trentonaster stellata Sturtz, Verh. naturh. Verh. preuss. Rheinl., etc., 1899, p. 

 225. 



Schuchertia stellata Gregory, Geol. Mag., dec. 4, 6, 1899, p. 351. Schuchert, 

 Bull. U. S. Nat. Mus., 88, 1915, p. 196, pi. 32, fig. 2; pi. 33, fig. 1. 



Trenton: Ottawa, Ontario. 



SCOFIELDIA Ulrich and Bassler. Genotype: Drepanella bilateralis Ulrich. 



Scofieldia Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 314. Grabau and 

 Shimer, N. A. Index Fossils, 2, 1910, p. 356. 



Scofleldia bilateralis (Ulrich). 



Drepanella bilateralis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 671, pi. 46, figs. 



35-38. ' 



Scofieldia bilateralis Uhlch and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 314, 

 pi. 41, figs. 16-18. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 356, 

 fig. 1664d-f. 



Black River (Decorah): St. Paul and near Cannon Falls, Minnesota 

 . Cat. No. 41558, U.S.N.M. 



SCOLECOLITHUS Roemer. See Scolithus Haldeman. 



