,'320 bULLETIiX ^>2, UNITED STATES NATIONAL MU8EUM. 



< j'cloceras inceptum acceleratum (Foerete). 



OrlLoceras inceptuiu var. aocclfiratnm Foerste, Gcol. Sun. <)hio, Pal., 7, lS«;i, p. 



545, pi. 37A, fig. 10. 

 Upper Medinan (Brassfield): Soldiers' Homo, nctir Dayton, Ohio. 



Cycloceras lesueuri (Clarke). 



Orthoceras lesueuri Clarke, Geol. Minnesota, 3, ]>t. 2, 1897, p. 785, pi. 53, fiK. 4; 



pi. 55, figs. 8, 9. 

 Cycloceras lesueuri Grabau and Rhinicr, N. A. Index Fossils, 2, 1910, p. 57, fij:. 



1256. 

 Black River (Plalteville): Cannon Falls, Minnesota. 

 Cotypes.—CAi. No. 46528, U.S.N.M. 



Cycloceras nlcolletl (Clarke). 



Orthoceras nicoUeti Clarke, Geol. Minnesota, 3, pt. 2, 1897, p. 784, pi. 55, figs. 1-2. 

 Cycloceras nicolletti Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 58, fig. 



1258. 

 Black River (Platte ville) : Belle Creek, Minnesota. 



Cycloceras novacarlislense (Foerste). 



Orthoceras (Cycloceras) novacarlislensis Foerste, Proc. Boston Soc. Nat. Hist., 24, 

 1889, p. 281, pi. 5, fig. 25; pi. 8, fig. 1; Geol. Surv. Ohio, Pal., 7, 1893, p. 545, 

 pi. 30, fig. 25; pi. 33, fig. 1. 

 Upper Medinan (Brassfield): Brown's Quarry, near New Carlisle, Ohio. 



Cycloceras olorus (Hall). 



Orthoceras vertebralc Hall (not Schlotheim), Pal. New York, 1, 1847, p. 201, pi. 

 43, figs. 5a-c. — Billings, Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, p. 

 328.— Rogers, Geol. Pennsylvania, 2, pt. 2, 1858, p. 819, fig. 608.— Lincklaen, 

 14th Rep. New York State Cab. Nat. Hist., 1861, pi. 3, fig. 4.— Hitchcock, 

 Geol. Vermont, \, 1861, p. 298, fig. 208.— Chamberlin, Geol. Wisconsin, 1, 

 1883, p. 158, fig. 



Orthoceras olorus Hall in Miller's American Pal. Foss., 1877, p. 245. — Lesley, 

 Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 554, fig.— Clarke, Geol. Min- 

 nesota, 3, pt. 2, 1897, p. 788, pi. 55, figs. 3, 5. 



Cycloceras olorus Grahau and Shimer, N. A. Index Fossils, 2, 1910, p. 57, fig. 1257. 



Trenton: MiddleAille, etc.. New York; Wykoff, etc., Minnesota (Prosser). 



Black River (PlatteWlle): Mineral Point and Janes\'ille, Wisconsin; St. Charles 

 and Holden, Minnesota. 



Cycloceras olorus ba£Bueuso (Schuchert). 



Orthoceras olorus var. baffinensis Schuchert, Proc. U. S. Nat. ^^us., 22, 1900, j>. 



169, pi. 12, figs. 19-22. 

 Mohawkian: Head of Frobisher Bay, Baffin Land. 

 Cotypes. —C-At. No. 28192, U.S.N .M. 



Cycloceras perrotl (Clarke). 



Orthoceras porroti Clarke, Cieol. Minnesota, 3, i>t. 2, 1897, j). 78;"), pi. 54, figs. 4, 5. 

 Richmond (Maquoketa): Granger, Minnesota. 



Cycloceras? rectiannulatum (Hall). 



Ortho<eras rectiannulatum Hall, Pal. New York, i, 1847, ]'. .U, ].l. 7, ligs. 2, 2a.- 



Emmons, Amer. Geology, 1, pt. 2, 1855, p. 140. 

 Cycloceras? (Spyroceras?) rectiannulatum Ruedemann, Bull. New York Siati- 



Mus., 90, 1906, p. 506. 

 Chazyan: Clinton County, New York. 



