1148 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Schmidtella Incompta Ulrich. 



Schmidtella incompta Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 642, pi. 45, figs. 



27, 32-33. 



Black River (Decorah) : Fountain, Minnesota. 

 Cotypes.C&t. No. 41298, U.S.N.M. 



Schmidtella incompta subaequalis Ulrich. 



Schmidtella incompta subsequalis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 642, 



pi. 43, figs. 39-41. 



Trenton (Prosser) : Near Cannon Falls, Minnesota. 

 Holotype.Csit. No. 41297, U.S.N.M. 



Schmidtella sublenticularis (Jones). 



Polycope sublenticularis Jones, Quart. Jour. Geol. Soc. London, 46, 1890, p. 550, 



pi. 21, figs. 6a, b. 

 Richmond (English Head and Charleton) : English Head, Anticosti. 



Schmidtella subrotunda Ulrich. 



Schmidtella subrotunda Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 643, pi. 45, 



figs. 39-42. 



Black River (Decorah) : Minneapolis, Minnesota. 

 Cotypes.C&t. No. 41300, U.S.N.M. 



Schmidtella umbonata Ulrich. 



Schmidtella umbonata Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 641, pi. 45, figs. 

 36-38. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 343, figs. 1656r-t. 

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

 Cotypes.C&t. No. 41301, U.S.N.M. 



SCHMIDTIA Zittel. See Dicellomus Hall. 



SCHR05DEROCERAS Hyatt. Genotype: Lituites angulatum Saeman. 



Schroederoceras Hyatt, Proc. Amer. Phil. Soc., 32, 1894, p. 458. Miller, N. A. 

 Geol. Pal., 2d App., 1897, p. 777. Ruedemann, Bull. New York State Mus., 

 90, 1906, p. 475. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 70. 



Schroederoceras cassinense (Whitfield). 



Lituites eatoni var. cassinensis Whitfield, Bull. Amer. Mus. Nat. Hist., 1, 1886, 



p. 332, pi. 32, fig. 2. Seely, Vermont State Geol. Rep., 7, 1910, pi. 54. 



%. 2. 

 Schrcederoceras cassinense Hyatt, Amer. Phil. Soc. Proc., 32, 1894, p. 473, pi. 6, 



figs. 36-38; pi. 7, figs. 4-6. Ruedemann, Bull. New York State Mus., 90, 1906, 



p. 476, pi. 20, figs. 1, 2, figs. 35-36. Grabau and Shimer, N. A. Index Fossils, 



2, 1910, p. 71. 



Canadian (Beekmantown) : Fort Cassin, Vermont; Valcour-, New York. 

 Plesiotypes.Czt. No. 25661, U.S.N.M. (Hyatt). 



Schroederoceras eatoni (Whitfield). 



Lituites eatoni Whitfield, Bull. Amer. Mus. Nat. Hist., 1, 1886, p. 331, pi. 28, 



figs. 5-7; pi. 32, fig. 1. Seely, Vermont State Geol. Rep., 7, 1910, pi. 54. 

 Discoceras eatoni Schroder, Pal. Abhandl. von Dames and Kayser, neue folge, 1, 



5, Heft 4, Jena, 1891, p. 22. 

 Schrcederoceras eatoni Hyatt, Amer. Phil. Soc. Proc., 32, 1894, p. 470, pi. 6, figs. 



28-35; pi. 7, figs. 7-8. Ruedemann, Bull. New York State Mus., 90, 1906, 



pp. 453, 476, pi. 20, figs. 3-4; pi. 23, fig. 1. Grabau and Shimer, N. A. 



Index Fossils, 2, 1910, p. 70, figs. 1280, 1281. 



Canadian (Beekmantown): Fort Cassin, Vermont; Valcour, New York. 

 Plesiotypes.C&t. No. 25660, U.S.N.M. (Hyatt). 



