1080 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Ptychophyllum expansum (Owen). 



Anthophyllum expansum Owen, Geol. Expl. Iowa, Wisconsin, and Illinois, 1844, 



p. 69, pi. 13, fig. 3. 



Cyathophyllum corintheum Owen, ibid., 1844, p. 69, pi. 13, fig. 6. 

 Cyathophyllum undulatum et multiplicatum Owen, ibid . , 1844, p. 69, pi. 13, fig. 10. 

 Ptychophyllum expansum Calvin, Amer. Geol., 12, 1893, pp. 108, 110, pi. 5, 



figs. 1-4. 

 Niagaran: Iowa and Wisconsin. 



Ptychophyllum florlforme Hall. 



Ptychophyllum florifonne Hall, 35th Hep. New York State Mus. Nat. Hist., 1884, 



p. 409 (Extras, 1882, p. 5). 

 Niagaran (Racine) : Racine, Wisconsin. 



Ptychophyllum fulcra turn Hall. 



Ptychophyllum fulcratum Hall, 35th Rep. New York State Mus. Nat. Hist., 1884, 



p. 410 (Extras, 1882, p. 6). 

 Niagaran (Louisville) : Louisville, Kentucky. 



Ptychophyllum invaginatum Davis. 



Ptychophyllum invaginatum Davis, Kentucky Foss. Corals, Geol. Surv. Ken- 

 tucky, pt. 2, 1885, pi. 105, fig. 8. 

 Niagaran (Louisville) : Near Louisville, Kentucky. 



Ptychophyllum ipomoea Davis. 



Ptychophyllum ipomoaa Davis, Kentucky Fossil Corals, Geol. Surv. Kentucky, 

 pt. 2, 1885, pi. 104, fig. 7; pi. 105, figs. 9, 10. Foerste, Proc. Boston Soc. Nat. 

 Hist., 24, 1890, p. 342. 



Niagaran (?Louisville): Louisville, Kentucky. 

 Upper Medinan ("Brassfield): Near Centerville, Ohio. 



Ptychophyllum stokesl Edwards and Haime. 



Ptychophyllum stokesi Edwards and Haime, British Foss. Corals, 1850, p. 69; 

 Mon. Polyp. Foss. d. Terr. Pal. (Arch, du Mus. d'Hist. Nat., 5), 1851, p. 

 407. Milne-Edwards, Hist. Nat. d. Corall., 3, 1860, p. 400. Davis, Ken- 

 tucky Fossil Corals, Geol. Surv. Kentucky, pt. 2, 1885, pi. 105, figs. 1-7. 

 Grabau and Shimer, N. A. Index Fossils, 1, 1906, p. 62. 



Omphyma Stockesii Rominger, Geol. Surv. Michigan, 3, pt. 2, 1876, p. 119, pi. 

 44, upper tier. 



Omphyma Stoked Whitfield, Geol. Wisconsin, 4, 1882, p. 279, pi. 14, fig. 10; pi. 

 15, fig. 4. 



Niagaran: Drummond Island, Lake Huron; Louisville, Kentucky; Racine, 

 Wisconsin. 



Plesiotypes. Cat. No. 52775, U.S.N.M. (Davis). 



Ptychophyllum vulcanlus Foerste; 



Ptychophyllum vulcaniue Foerste, Jour. Geol., 11, 1903, p. 713. 

 Niagaran (Brownsport) : West of Hope Creek, west Tennessee. 



PTTCHOPTERIA Hall. Genotype: P. eugeniaHall. 



Ptychopteria Hall, Pal. New York, 5, pt. 1, Lam., 1883, p. 3; ibid., 1884, p. 12; 

 35th Rep. New York State Mus. Nat. Hist., 1884, p. 406c; 1st Rep. State 

 Geol. New York, 1884, p. 13. Jackson, Mem. Boston Soc. Nat. Hist., 4, 1890, 

 p. 386. Whidborne, Mon. Dev. Fauna South England, 3, Pal. Soc., 1897, 

 p. 125. 



