LIST O* : GENJS1U. A*L> SFKU^JbJft. 327 



Cycloceras teretiforme (Hall). 



Orthoceras teretiforme Hall, Pal. New York, 1, 1847, p. 198, pi. 42, figs. 8a, b. 



Emmons, Amer. Geology, 1, pt. 2, 1855, p. 149. 

 Orthoceras (Cycloceras) teretiforme Clarke and Ruedemann, Bull. New York State 



Mus., 65, 1903, p. 642 (gen. ref.). 

 Trenton: Watertown, New York. 



Tvc i.ot tKUA Foerste. See Plectorthis, subgenus Encuclodema Foerste. 



CYCLOCONCHA Miller. Genotype: C. mediocardinalis Miller. 



Anodontopsis (part) Meek (not McCoy), Amer. Jour. Soi. Arts, 3d ser., 2, 1871, 



p. 297; Pal. Ohio, 1, 1873, p. 140. 



rydoconcha Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 231. Ulricli, Geol. 

 Surv. Ohio, 7, 1893, p. 686. Zittel, Handb. Pal., 2, 1881, p. 103. Miller, 

 N. A. Geol. Pal., 1889, p. 474. 

 OrthodontiscusMeek, Geol. Surv. Ohio, Pal., 1, 1873, p. 140. Cumings, 32d Ann. 



Rep. Dep. Geol. Nat. Res., Indiana, 1908, p. 983. 

 Observation. See Ulrich (1893) for a discussion of the name Orthodontiscus. 



Cycloconcha mediocardinalis Miller. 



Cycloconcha mediocardinalis Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 231, 



figs. 21, 22; N. A. Geol. Pal., 1889, p. 474, fig. 809. Ulrich, Geol. Surv. Ohio, 



7, 1893, p. 686, pi. 48, fig. 12; pi. 51, figs. 14-21. 

 Eden (Sou thgate): Cincinnati, Ohio, and vicinity. 

 Plesiotype.C&t. No. 46161, U.S.N.M. 



Cycloconcha milleri (Meek). 



Anodontopsis? Milleri Meek, Amer. Jour. Sci., 3d ser., 2, 1871, p. 297; Geol. Surv. 



Ohio, Pal., 1, 1873, p. 140, pi. 12, figs, la-d. Miller, Cincinnati Quart. Jour. 



Sci., 1, 1874, p. 227; N. A. Geol. Pal., 1889, p. 462, fig. 775. 

 Cycloconcha milleri Ulrich, Geol. Surv. Ohio, 7, 1893, p. 686 (gen. ref.). 

 Orthodontiscus milleri Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 



1908, p. 1015, pi. 47, figs. 8, 8c. 

 Richmond (Waynesville) : Versailles, Indiana. 

 Cotypes and plesiotypes.C&t. Nos. 26409, 46162, U.S.N.M. 



Cycloconcha oblonga Foerste. 



Cycloconcha oblonga Foerste, Jour. Cincinnati Soc. Nat. Hist., 21, 1914, p. 137, 



pi. 1, fig. 6. 

 Trenton (Upper): Near Rogers Gap, Kentucky. 



Cycloconcha ovata Ulrich. 



Cycloconcha ovata Ulrich, Geol. Surv. Ohio, 7, 1893, p. 687, pi. 48, figs. 13-15. 

 Eden (Southgate): Cincinnati, Ohio, and vicinity. 

 Cotypes. Cat. No. 46163, U.S.N.M. 



CYCLOCRINITES Eichwald. Genotype: C. spaskii Eichwald. 



Cyclocriuites Eichwald, Schicht. Esthland, 1840, p. 192. Edwards and Haime, 

 Mon. Polyp. Foss. Terr. Pal. (Arch, du Mus. d'Hist. Nat., 5), 1851, pp. 177, 

 468. Eichwald, Leth. Ross. Pal. Russie, 1, 1860, p. 637. Milne-Edwards, 

 Hist. Nat. d. Corall., 3, 1860, p. 452. Niles, Proc. Boston Soc. Nat. Hist., 10, 

 18-J5, p. 19. 



Cyclocrinug Kayser, Zeits. d. d. geol. Gesell., 27, 1875, p. 780. Nicholson and 

 Etheridge, Mon. Sil. Foss. Girvan Dist., 1878, pp. 15, 16. Roemer, Leth. 

 geog., 1 Theil, Leth. Pal., Erste Lief, 1880, p. 292. Zittel, Handb. Pal., 1, 

 1880, p. 728. Rauff, Zeits. d. d. geol. Gesell.. 40, 1888, p. 609. Roemer, 



