BIBLKKJKAl'HIC LIST OF CKNBRA AND BPEO1KS. 351 



Cyrtoceras constrictostrlatum Hall. 



Cyrtoceras consfrictostriatum Hall, Pal. New York, 1, 1847, p. 195, pi. 42, figs. 



2a, b, 3c, d. Emmons, Amer. Geology, 1, pt. 2, 1855, p. 147. 

 Trenton: Mlddleville, New York. 



CYRTOCERAS CONSTKICTUM Billings. ^<'<> Oiu-ocrns roMMfricfum. 



Cyrtoceras cordatuni Parks. 



Cyrtoceras cordatum Parks in Tyrrell, 22d Hep. Ontario Bur. Mines, 191:5, ]. -\'2. 

 Niagaran : Mouth of Nelson River, Manitoba. 



CYRTOCERAS CORNICULUM Hall. See Cyrtoceras teiiuistriatuin. 



Cyrtoceras cornulum Schuchert. 



Cyrtoceras cornulum Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 170, pi. II, 



figs. 8-10. 



Mohawkian: Head of Frobisher Bay, Baffin Laud. 

 Cotype. Cat. No. 28121, U.S.N.M. 



Cyrtoceras corydon Billings. 



Cyrtoceras Corydon Billings, Cat. Sil. FOBS. Anticosti, Geol. Surv. Canada, 1866, 



p. 85, fig. 23. 

 Niagaran (Lockport): (irimsby, Ontario. 



Cyrtoceras(?) cuneatum Whiteaves. 



Cyrtoceras(?) cuneatuui Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 



1906, p. 282; Ottawa Nat., 20, p. 133, figs. 

 Niagaran: Stonewall, Manitoba. 



Cyrtoceras? dactyloldes D wight. 



Cyrtoceras? dactyloides Dwight, Amer. Jour. Sci. Arts, 3d ser., 27, 1884, p. 255, 



pi. 7, tigs. 9, 9a. 

 Canadian (Beekmantown): Rochdale, New York. 



CYRTOCERAS DARDANUM Hall. See Cyrtorizoceras dardanum. 



Cyrtoceras dictys Billings. 



Cyrtoceras Dictys Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 192, fig. 176. 

 Canadian (Levis): Point Levis, Quebec. 



Cyrtoceras dresbachense Sardeson. 



Cyrtoceraa dresbachense Sardeson, Bull. Minnesota Acad. Nat. Sci., 4, 1896, 



' p. 102, pi. 6, fig. 4. 

 Ozarkian (Oneota): Dresbach, Minnesota. 



Cyrtoceras dunleithense Miller and Gurley. 



Cyrtoceras dunleithense Miller and Gurley. Bull. Illinois State Mue. Nat. Hist., 



11, 1896, p. 30, pi. 3, figs. 11, 12. 

 Black River (Platteville) : Dunleith, Illinois. 



Cyrtoceras (Glyptoceras) eatonense (Claypole). 



Glyptodendron eatonenee Claypole, Amer. Jour. Sci. Arta (3), 15, 1878, p. 302; 



Geol. Mag., dec. 2, 5, 1878. Miller, N. A. Geol. Pal., 1889, p. 119, fig. 39. 

 Cyrtoceras (Glyptoceras) eatonense Foerste, Geol. Surv. Ohio, Pal., 7, 1893, 



p. 535, pi. on p. 536, figs, la-c, 2. 

 Cyrtoceras (Glyptodendron) eatonense Foerste. Amer. Geol., 12, 1893, p. 139, 



pi. 7, figs. 1, 2. 

 Upper Medinan (Brassfield): Near Eatou and nt-ar Dayton. Ohio, 



