1020 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 

 POLYCOPE SUBLENTICULARIS Jones. See Schmidtella sublenticularis. 

 POLYDILASMA Hall. See Zaphrentis Rafinesque. 



POLTGNATHUS 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, . 

 153. 



Polygnathus wilsoni James. 



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



fig. c. 

 MaysvLlle (Corryville) : Warren County, Ohio. 



POLTGTRATA Weller. Genotype: P. sinistra Weller. 



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



Polygyrata hunterensls (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 poly gy rat a (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 Parl., 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 slntstra Weller. 



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



figs. 1, 2. 

 Canadian (Beekmantown) : Columbia, New Jersey. 



Polygyrata trochiscus (Meek). 



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

 phia, 1870, p. 61. 



Raphistoma? trochiscus Meek,U. S. Geol. Expl., 40th Parl., 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. 



