1020 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Polycope sublenticular^ Jones. See Schmidtella sublenticularis. 



Polydilasma Hall. See Zaphrentis Rafinesque. 



POLYGNATHUS Hinde. Genotype: P. dubius Hinde. 



Polygnathus Hinde, Quart. Jour. Geol. Soc. London, 1879, p. 361.— Miller, N. A. 

 Geol. Pal., 1889, p. 520.— Grabau, Bull. Buffalo Soc. Nat. Sci., 6, 1899, p. 

 153. 



Polygnathus wilsoni James. 



Polygnathus wilsoni James, Jour. Cincinnati Soc. Nat. Hist., 7, 1884, p. 148, pi. 7, 



fig. c. 

 Maysville (Corryville): Warren County, Ohio. 



POLYGTRATA Weller. Genotype: P. sinistra Weller. 



Polygyrata Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 130. 



Polygyrata hunterensis (Cleland). 



Pleurotomaria hunterensis Cleland, Bull. Amer. Pal., 3, 1900, p. 124 (252), pi. 17, 



figs. 1, 2, 7, 8; ibid., 4, 1903, p. 16, pi. 4, figs. 1, 2. 

 Polygyrata hunterensis Weller, Geol. Surv. New Jersey, Pal., 3, p. 130 (gen. ref.). 

 Canadian (Tribes Hill): Ft. Hunter, Tribes Hill, Little Falls, etc., New York. 



Polygyrata polygyrata (Roemer). 



Euomphalus polygyratus Roemer, Texas, Bonn, 1849, p. 421; Kreidebildungen 



von Texas, Bonn, 1852, p. 91, pi. 11, figs. 4a, 4b. 

 Polygyrata polygyratus Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 130 (gen. 



ref.). 

 Canadian (Beekmantown): San Saba Valley, Texas. 



Polygyrata rotuliformis (Meek). 



Euomphalus (Raphistoma) rotuliformis Meek, Proc. Acad. Nat. Sci. Philadelphia, 



1870, p. 61. 

 Raphistoma? rotuliformis Meek, U.S. Geol. Expl., 40th Par!., 4, 1877, p. 18, pi. 



1, figs. 2a-b. 

 Polygyrata rotuliformis Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 130 (gen. 



ref.). 

 Canadian (Beekmantown): Muddy Creek, Nevada. 

 Cotypes.— Cat. No. 17316, U.S.N.M. 



Polygyrata sinistra Weller. 



Polygyrata sinistra Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 130, pi. 4, 



figs. 1, 2. 

 Canadian (Beekmantown) : Columbia, New Jersey. 



Polygyria trochiscus (Meek). 



Euomphalus (Raphistoma?) trochiscus Meek, Proc. Acad. Nat. Sci. Philadel- 

 phia, 1870, p. 61. 



Raphistoma? trochiscus Meek,U. S. Geol. Expl., 40th Pari., 4, 1877, p. 19, pi. 1, 

 figs. 3, 3a, 3b.— White, Rep. U. S. Geogr. Surv., West 100th Merid., 4, War 

 Dep., 1877, p. 77, pi. 4, fig. 13a-c. 



Polygyrata trochiscus Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 130 (gen. 

 ref.). 



Canadian (Beekmantown): Muddy Creek, Nevada. 



Cotypes.— Cat. No. 17315, U.S.N.M. 



