BIBLIOGKAPHIC LIST OF OENERA AND SPECIES. 351 



Cyrtoceras constrlctostrlatnm llall. 



Cyrtoceraa cougtrictoHtriatum Hall, Pal. New York, ], 1847, p. 195, pi. 42, figa. 



2a, b, 8c, d. — Emmons, Amor. Geology, 1, i)l. 2, 1855, p. ]47. 

 TreiUon: ^^ddlc^•ille, New York. 



('yrtocku-\s coNSTiacTUM Billings. 8cc (~)nco<jer:!H <-<)i)Htri<-1mii. 



Cyrtoceras oordatum rarks. 



Cyrtoceraa cordatum Parks in Tyrrell, 22d llei>. Ontario Bur. Mines, 19i;i, ]>. 42. 

 Niagaran: Mouth of Nelson Kiver, Manitoba. 



("yrtoceras corniculum Hall. See C'yrtoceras tenuistriatum. 



Cyrtoceras corniilum Schuchert. 



("yrtoceras cornulum Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 170, pi. 14, 



figs. 8-]0. 

 MoJiawkian: Head of Frobislier Bay, Baffin Laud. 

 Cotype.—L'At. No. 28121, U.S.N.M. 



Cyrtocera.s coryrton Billings. 



Cyrtoceraa Corydon Billings, Cat. Sil. Fosa. Anticosti, Geol. Surv. Canada, ISBG, 



p. 85, lig. 23. 

 Niagaran (Lockport): Grimsby, Ontario. 



Cyrtoceras(f) cuneatum Whiteaves. 



Cyrtocera3(?) cuneatum Whiteaves, Geol. Surv. Canada, Pal. Fosa., 3, pt. 4, 



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

 Niagaran: Stonewall, Manitoba. 



Cyrtocera.s? tlactyloides Dwight. 



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



pi. 7, figs. 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, j). 192, fig. ]76. 

 Canadian (Levis): Point T-evis, Quebec. 



Cyrtoceras drcsbachense Sardcson. 



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



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

 Ozarkian (Oneota): Dresbach, Minnesota. 



Cyrtoceras duulelthense Miller and Gurley. 



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



11, 1896, p. 30, pi. 3, figs. 11, ] 2. 

 Black River (Platteville): Dunleith, Illinois. 



Cyrtoceras (Glyptoceras) eatonense (Claypole). 



Glyptodendron eatononso Claypole, Amer. Jour. Sci. Arts (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. 530, figs, la-c, 2. 

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



pi. 7, figs. 1, 2. 

 Fpper Medinan (Brassfieldj: Near Eaton and m-.w Dayton, Ohio. 



