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 etmultiplicatum 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 floriforme Hall. 



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



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

 Niagaran (Racine): Racine, Wisconsin. 



Ptychophyllum fulcratum Hall. 



Ptychophyllum fulcratum Hall, 35th Rep. New York State Mus. Nat. Hi3t., 1884, 



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

 Niagaran (Louisville): Louisville, Kentucky. 



Ptychophyllum invaglnatum Davis. 



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

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

 Niagaran (Louisville) : Near Louisville, Kentucky. 



Ptychophyllum ipomcea Davis. 



Ptychophyllum ipomoea 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 stokesi Edwards and Haime. 



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

 Mon. Polyp. Fobs. 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 Stokesi Whitfield, Geol. Wisconsin, 4, 1882, p. 279, pi. 14, fig. 10; pi. 

 15, fig. 4. 



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

 Wisconsin. 



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



Ptychophyllum vulcanius Foerste. 



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

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



PTYCHOPTERIA Hall. Genotype: P. eugenia Hall. 



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. 



