LIST Oi (.'UJS'ISBA AND SJPiSC'lEtt. ,'i47 



Cjrtendoeeraa(f) priscum Ruedemann. 



Oyrtendoceraa(?) priscuni Ruedemmnn, Bull. New "York 8tuto Miw., Jw, i!Mr>, 



p. 430, pi. 2, figs. 2-5. 

 Canadian (Beekmantown): Beekmantown, New York. 



( YRTHIA D'Orbiguy. See Cyrtia Dalmau. 



CYRTIA Dalman. Genotype: Anomites exporrectus Wahlenberg. 



Cyrtia Dalman, Kongl. Svenska Vet.-Akad. Handl. for 1827, 1828, pp. 93, 97. 

 Davidson, British FOBS. Brach. Pal. Soc., 1853, p. 83; 1859, p. 66. Billings, 

 Canadian Jour., 6, 1861, p. 262. Zittel, Handb. Pal., 1, 1880, p. 683. Nettel- 

 roth, Kentucky Fossil Shells, Mem. Kentucky Geol. Surv., 1889, p. 93. 

 Miller, N. A. Geol. Pal., 1889, p. 342. Hall and Clarke, Pal. New York, 8, 

 pt. 2, 1893, p. 40; 13th Ann. Rep. New York State Geol., 1895, p. 759. 

 Koken, Die Leitfossilien, Leipzig, 1896, p. 243, fig. 204, 3. Schuchert, 

 Zittel-Eastman Textb. Pal., 1, 1900, p. 336; 2cl ed., 1913, p. 412. 



Cyrthia D'Orbigny, Prodr. Pal., 1, 1849, p. 41. 



Cyrtia cliftouensis Foerste. 



Cyrtia cliftonensis Foerste, Jour. Geol., 11, 1903, p. 709; Bull. Sci. Lab. Denison 



Univ., 14, 1909, p. 91, pi. 2, fig. 32. 

 Niagarau (Brownsport): Near Clifton, Tennessee. 



CYRTIA EXPORRECTA Hall and Whitfield, 1875. See Cyrtia exporrecta myrtia. 



Cyrtia exporrecta (Wahlenberg). 



Anomites exporrectus Wahlenberg, Nova Acta Regias Soc. Scient. Upsal, 8, 1821, 



p. 64. 

 Spirifera (Cyrtia) trapezoidalis Hall and Whitfield, 24th Rep. New York Stale 



Cab. Nat. Hist., 1872, p. 183. 



Cyrtia trapezoidalis Hall and Whitfield, 27th Rep. ibid., 1875, pi. 9, figs. 19-21. 

 Cyrtia exporrecta Dalman, Kongl. Vet.-Akad. Handl. for 3827, 3828, p. 118. 



Nettelroth, Kentucky Fossil Shells, Mem. Kentucky Geol. Surv., 1889, p. 



93, pi. 27, figs. 6-8, 20. Miller, N. A. Geol. Pal., p. 342, 1889, fig. 557. 



Hall and Clarke, Pal. New York, 8", pt. 2, 1893, p. 42, pi. 28, figs. 1, 48, 49, 51. 

 Silurian: Europe; Louisville, Kentucky (Louisville); Osgood, Indiana (Osgood). 

 , No. 51326, U.S.N.M. 



;.: 



TiA EXPORRECTA var. .ARRECTA Nettelroth. See Cyrtia exporrecta myrtia. 



yrtia exporrecta myrtia (Billings). 



Cyrtia myrtia Billings, Pal. Fossils, 1, 1862, p. 165, fig. 149. Hall and Clarke 

 Pal. New York, 8, pt. 2, 1893, p. 42. Kindle and Breger, 28th Ann. Rep. 

 Dep. Geol. Nat. Res. Indiana, 1904, p. 443, pi. 9, figs. 10, 12. 



Cyrtia trapezoidalis var arrecta Hall and Whitfield, 24th Rep. New York State 

 Cab. Nat. Hist., 1872, p. 183. 



Cyrtia exporrecta Hall and Whitfield, 27th Rep. ibid., 1875, pi. 9, figs. 22, 23. 



Cyrtia exporrecta var. arrecta Nettelroth, Kentucky Fossil Shells, Mem. Ken- 

 tucky Geol. Surv., 1889, p. 94, pi. 27, fig. 21; pi. 34, fig. 35; pi. 37, figs. 60, 

 61. Hall, and Clarke, Pal. New York, 8, pt. 2, 1895, pi. 28, figs. 2, 3; pi. 39, 

 fig. 32. 



Anticostian (Chicotte): Southwest Point, Anticosti. 



Niagaran: Louisville, Kentucky (Louisville); Indiana and Tennessee (Osgood 

 andWaldron); Wisconsin (Racine). 



Plesiotype.C&t. No. 51 327, U.S.N.M. (Nettelroth types of C. exporrecta-arrecta). 



