368 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Cyrtolites .sinuatus Hall and Whitfield. 



Cyrtolites sinuatus Hall and Whitfield, U. S. Geol. Expl. 40th Parl., 4, 1877, p. 



237, pi. 1, figs. 23 ? 24. Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 127, 



pi. 4, fig. 9. 

 Ordovician : White Pine District, Nevada (Upper Pogonip) ; Columbia, New Jersey 



(Beekmantown). 

 HolotypeCat. No. 17363, U.S.N.M. 



Cyrtolites sinuosus Hall. 



Cyrtolites sinuosus Hall, 28th Rep. New York State Mus. Nat. Hist., doc. ed., 



1877, pi. 30, figs. 16-18; mus. ed., 1879, p. 178, pi. 30, figs. 16-18; llth Ann. 



Rep. Indiana Dep. Geol. Nat. Hist., 1882, p. 321, pi. 31, figs. 16-18. 

 Niagaran (Waldron): Waldron, Indiana. 



CYRTOLITES SUBACUTUS Miller. See Oxydiscus subacutus. 

 CYRTOLITES SUBCARINATUS Emmons. See Carinaropsis carinata. 

 CYRTOLITES SUBCOMPRESSUS Meek. See Microceras inornatum. 



Cyrtolltes subplanus Ulrich. 



Cyrtolites subplanus Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 846, pi. 62, figs. 



40-^4. 



Trenton (Catheys): Nashville, Tennessee. 

 Cotypes.Cat. No. 45792, U.S.N.M. 



CYRTOLITES TRENTONENSIS Conrad. See Eccyliomphalus trentonensis. 



Cyrtolites youngi Foerste. 



Cyrtolites Youngi Foerste, Proc. Boston Soc. Nat. Hist., 24, 1889, p. 289, pi. 6, 



fig. 7; Geol. Surv. Ohio, Pal., 8, 1893, p. 549, pi. 31, figs. 7, 7a. 

 Upper Medinan (Brassfield): Hanover, Indiana. 



CYRTOLITINA Ulrich. Genotype: Cyrtolites lamellifer Lindstrom. 



Cyrtolites Ulrich (part), Jour. Cin. Soc. Nat. Hist., 2, 1879, p. 12. Lindstrom, 



Silurian Gastropoda of Gotland, 1884, pp. 82-84. 

 Cyrtolitina Ulrich, Geol. Minnesota, 3, pt. 2, 1897, pp. 847-866. Dall, Zittel- 



Eastman Textb. Pal., 2d ed., 1913, p. 521. 



Cyrtolitina nitidula (Ulrich). 



Cyrtolites nitidulus Ulrich, Jour. Cin. Soc. Nat. Hist., 2, 1879, p. 12, pi. 7, figs. 



7,7*. 



Cyrtolitina nitidula Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 866, pi. 62, figs. 53-55. 

 Trenton (Upper) : River quarries, Covington, Kentucky. 

 Holotype.Cxt. No. 45793, U.S.N.M. 



CYRTOMETOPUS SCOFIELDI Clarke. See Ceraurinus scofieldi. 



CTRTORIZOCERAS Hyatt. Genotype: Cyrtoceras minneapolis Clarke. 



Cyrtorizoceras Hyatt, Zittel-Eastman Textb. Pal.*, 1900, p. 529; ibid, 2d ed., 

 1913, p. 610. 



Cyrtorizoceras curvicameratum Clarke and Ruedemann. 



Cyrtorhizoceras curvicameratum Clarke and Ruedemann, Mem. New York 



State Mus., 5, 1903, p. 90, pi. 17, figs. 1-10. 

 Xiagaran (Lockport-Guelph): Shelby, New York. 



