BIBLIOGRAPHIC LIST OF GENEKA AND SPECIES. 369 



Cyrtorlzoceras dardanum (Hall). 



Cyrtoceras dardanum Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 43; 20tli 



Rep. New York State Cab. Nat. Hist., 1868 (extras Jan., 1865), p. 349, pi. 



17(8), figs. 3-5; rev. ed., 1870, p. 406, pi. 17, figs. 3-5.— Meek and Worthen, 



Geol. Surv. Hlinois, 6, 1875, p. 506, pi. 25, figs. 6a, b. 

 Cyrtoceras Fultonensis Meek and Worthen, Geol. Surv. Illinois, 6, 1875, p. 506. 

 Cyrtorhizoceras dardanus Clarke and Ruedemann, Mem. New York State Mus., 



5, 1903, p. 91 (gen. ref.). 

 Niagaran: Waukesha, Wisconsin (Racine); Fulton City, Illinois. 



Cyrtorizoceras fosteri (Hall). 



Cyrtoceras fosteri Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 41. — Winchell 



and Marcy, Mem. Boston Soc. Nat. Hist., 1, 1865, p. 102.— Hall, 20th Rep. 



New York State Cab. Nat. Hist., 1868 (extras Jan., 1865), p. 349, pi. 16(7), 



figs. 11-13; rev. ed., 1870, p. 406, pi. 16, figs. 11-13. 

 Cyrtorhizoceras fosteri Clarke and Ruedemann, New York State Mus., 5, 1903, 



p. 91 (gen. ref.). 

 Niagaran (Racine): Chicago, Illinois; Wisconsin. 



Cyrtorizoceras isodorus (Billings). 



Cyrtoceras Isodorus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 175, fig. 



157a, b. 

 Black River: St. Joseph Island, Lake Huron. 



Cyrtorizoceras minneapolis (Clarke). 



Cyrtoceras minneapolis, Clarke, Geol. Minnesota, 3, pt. 2, 1897, p. 808, pi. 59, 



figs. 1-8. 

 Cyrtorizoceras minneapolis Hyatt, Zittel-Eastman Textb. Pal., 1900, p. 529 



(gen. ref.). 

 Black River (Platteville) : Minneapolis, Minnesota. 

 Cotype.— Cat. No. 46525, U.S.N.M. 



CTRTOSPIRA Ubich. 



Genotypes: C. tortilis Ulrich and Subulites ventricosus Hall. 

 CjTtospira Uhich, Geol. Minnesota, 3, pt. 2, 1897, p. 1073. 



Cyrtospira abbreviata (Hall). 



Subulites abbreviata Hall, 3d Rep. New York State Cab. Nat. Hist., rev. ed., 1850, 



p. 180, pi. 3, fig. 2a-c; doc. ed., p. 172. 

 Cyrtospira abbreviata Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 1070 



(gen. ref.). 

 Trenton: Near Watertown, New York. 



Cyrtospira attenuata Ruedemann. 



Cyrtospira attenuata Ruedemann, Bull. New York State !Mus., 49, 1901, p. 35, 



pi. 2, fig. 8. 

 Mohawkian (Rysedorph): Rysedorph Hill, Rensselaer County, New York. 



Cyrtospira bicurvata Ulrich. 



Cyrtospira bicurvata Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 1074, pi. 81, 



figs. 21, 22. 

 Black River (Lowville) : High Bridge, Kentucky. 

 Holofype.— Cat. No. 45794, U.S.N.M. 



84243°— Bull. 92—15 24 



