BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 311 



Ctenodonta subelliptica Savage. 



Ctenodonta subelliptica Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 93, pi. 5, 



fig. 25. 

 Upper Medinan (Edgewood): Near Edgewood, Missouri. 



Ctenodonta subnasuta Ulrich. 



Ctenodonta subnasuta Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 585, pi. 42, figs. 

 34-36.— Whiteaves, Tal. Foss., Geol. Surv. Canada, 3, pt. 3, 1897, p. 185.— 

 Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 160, pi. 13, figs. 4-6. 



Trenton: Near Cannon Falls, Minnesota (Prosser); Lake Winnipeg and Bafllin 

 Land, Canada. 



Holotype and plesiohjpe.—C&t. Nos. 46156, 28163, U.S.N.M. 



Ctenodonta subovata Whiteaves. 



Ctenodonta subovata Whiteaves, Ann. Rep. Geol. Surv. Canada, n. s., 14, App. F, 



1904, p. 47; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 256, pi. 27, 



figs. 9, 9a. 

 Niagaran: Ekwan River, Canada. 



Ctenodonta subrecta (Clarke). 



Tellinomya subrecta Clarke, Archivos. Mus. Nac. Rio de Janeiro, 10, author's 



Eng. ed., 1900, p. 17, pi. 2, fig. 16. 

 Silurian: Rio Trombetas, Brazil. 



Ctenodonta subrotunda (Ulrich). 



Tellinomya subrotunda Uhich, 19th Ann. Rep. Geol. Nat. Hist. Surv. Minnesota, 



1892," p. 219, fig. 5. 

 Ctenodonta subrotunda Hayes and Ulrich, U. S. Geol. Siuv. Folio 95, illus. sheet, 



1903, figs. 40, 41. 

 Trenton: Mercer County, Kentucky (Curdsville); near Cannon Falls, Minnesota 



(Prosser); Tennessee (Bigby). 

 Holotype.— Cat. No. 46157, U.S.N.M. 



Ctenodonta subtrigona (Simpson). 



Nucula subtrigona Simpson in Lesley, Geol. Surv. Pennsylvania, Rep. P 4, p. 472, 



figs.; Trans. Amer. Phil. Soc, n. s., 16, p. 452, fig. 20. 

 Clinton: Orbisonia, Huntington County, Pennsylvania. 



CTENOPLEURON Matthew. Genotype: C. nerepisense Matthew. 



Ctenopleuron Matthew, Trans. Pi.oyal Soc. Canada, 3d ser., 1, sec. 4, 1907, p. 7. 



Ctenopleuron nerepisense Matthew. 



Ctenopleuron nerepisense Matthew, Trans. Royal Soc. Canada, 3d ser., 1, sec. 4, 



1907, p. 7, 1 pi. 

 Clinton??: Cunningham Brook, near Nerepis Station, Kings Comity, New Bruns- 

 wick. 



Ctenopteiius Clarke and Ruedemann. See Stylonurus subgenus Ctenopterus. 



CTENOPYGE Linnarsson. Genotype: Olenus (Sphaerophthalmus) pecten Salter. 

 Ctenopyge Linnarsson, Geol. Foren. Stockholm Forh., 5, 1880, p. 145; Sver. Geol. 

 Unders., ser. C, No. 43, 1880, p. 15. — Brogger, Die sil. Etagen 2-3, Kristiania, 

 1882, p. 113.— Zittel, Handb. d. Pal., 2, 1885, p. 596.— Matthew Trans. Royal 

 Soc. Canada, 9, sec. 4, 1892, p. 55. — Koken, Die I;eitfossilien, Leipzig, 1896, 

 p. 20, fig. 11; figs. 7, 14.— Liudstrom, Kongl. Sven. Vet.-Akad. Handl., No. 8, 

 1901, pp. 26, 29.— Lake, Paleontcgraphical Soc, 1913, p. 78. 



