326 l.n.Lli'TlN !rj, I'NITEU STATES NATIONAL MU8EI .1 . 



Cycloceras Inceptum acceleratum (Foerste). 



Orthoceras inceptum var. acceleratum Foerste, Geol. Surv. Oldo, Pal., 7, 1893, p. 



545, pi. 37A, fig. 10. 

 Upper Medinan (Brassfield): Soldiers' Home, near Dayton, Ohio. 



Cycloceras lesueuri (Clarke). 



Orthoceras lesueuri Clarke, Geol. Minnesota, 3, pt. 2, 1897, p. 785, pi. 53, fig. 4: 



pi. 55, figs. 8, 9. 

 Cycloceras lesueuri Grabau and Sliimer, X. A. Index Fossils, 2, 1910, p. 57, fig. 



1256. 



Black River (Platteville): Cannon Falls, Minnesota. 

 Cotypes. Cat, No. 46528, TJ.s.N.M. 



Cycloeeras nicolleti (Clarke). 



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

 Cycloeeras nicolletti Grabau and Shinier, N. A. Index Fossils, 2, 1910, p. 58, fig. 



1258. 

 Black River (Platteville): Belle Creek, Minnesota. 



Cycloeeras novacarllslense (Foerste). 



Orthoceras (Cycloeeras) 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. 

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



Cycloceras olorus (Hall). 



Orthoceras vertebrale 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, 1, 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 Grabau and Shinier, N. A. Index Fossils, 2, 1910, p. 57, fig. 1257. 



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



Black River (Platteville) : Mineral Point and Janesville, Wisconsin; St. Charles 

 and Holden, Minnesota. 



Cycloceras olorus bafflnense (Schuchert). 



Orthoceras olorus var. baffinensis Schuchert, Proc. V. S. Nat. Mus., 22, IftOO, p. 



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



Mohawkian: Head of Frobisher Bay, Baffin I. and. 

 Cotypes. Cat. No. 28192, TJ.S.N.M. 



Cycloceras perroti (Clarke). 



Orthoceras perroti Clarke, Geol. Minnesota, 3, pt, 2, 1807. p. 7S:>. pi. 54, figs. 4, 5. 

 Richmond (Maquoketa): Granger, Minnesota. 



Cycloceras? rectiannulatuni (Hall). 



Orthoceras rectiannulatum Hall, Pal. New York, 1, 1847, p. 34, pi. 7, figs. 2, 2a. 



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

 'yoloceras? (Spyroceras?) rectiannulatum Rnedemann, Bull. Xew York 



Mus., 90, 1906, p. 506. 

 Chazyan: Clinton County, Xew York. 



