1072 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 

 PTILODICTYA KENTUCKIENSIS James. See Arthropora kentuckiensis. 

 PTILODICTYA LABYRINTHICA Emmons. See Stictopora? labyrinthica. 

 PTILODICTYA LANCEOLATA Eichwald. See Ptilodictya gladiola. 

 PTILODICTYA LANCEOLATA vflr. AMERICANA Foerste. See Ptilodictya expansa. 

 PTILODICTYA LIBANA Safford. See Escharopora Ubana. 

 PTILODICTYA MACULATA Ulrich. See Escharopora maculata. 



Ptilodictya magnifies Miller. 



Ptilodictya magnifica Miller, Jour. Cincinnati Soc. Nat. Hist., 1, 1878, p. 100, 



pi. 3, figs. 1, la; N. A. Geol. Pal., 1889, fig. 503 (p. 318). Ulrich, Geol. Surv. 



Illinois, 8, 1890, fig. lla-c (p. 391). 

 Stenopora mammulata Billings, Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 



1866, p. 7 (loc. ref.). 

 Richmond: Richmond, Indiana; Oxford, Ohio, etc. (Whitewater); Wilmington, 



Illinois; Maury County, etc., Tennessee (Fernvale); Island of Anticosti 



(English Head and Charleton). 

 Plesiotype.Czt. No. 43420, TT.S.N.M. 



Ptilodictya multiramis Safford. Not recognized! 



Ptilodictya multiramis Safford, Geol. Tennessee, 1869, p. 286. 

 Stones River (Lebanon): Central Tennessee. 

 Observation. See note on Escharopora briareus Ulrich. 



PTILODICTYA NITIDULA Billings. See Dicranopora nitidula. 



Ptilodictya nodosa James. 



Ptilodictya nodosa James, Paleontologist, No. 3, 1879, p. 20. Ulrich, Jour. 



Cincinnati Soc. Nat. Hist., 4, 1882, pi. 7, figs. 2, 2a. Nickles and Bassler, 



Bull. U. S. Geol. Surv., 173, 1900, p. 380. Bassler, Proc. U. S. Nat. Mus., 



30, 1906, p. 50. 



Ptilodictya clintonensis James, Paleontologist, No. 5, 1881, p. 38. 

 Ptilodictya teres James, Paleontologist, No. 5, 1881, p. 40. 

 Ptilodictya variabilis Ulrich, Geol. Surv. Illinois, 8, 1890, p. 304, fig. 2a, fig. 6a 



(p. 317). Miller, N. A. Geol. Pal., 1889, figs. 505, 506 (p. 319). 

 Richmond (Liberty and Whitewater): Clinton and Warren Counties, Ohio; 



Indiana. 

 Plesiotype.Cat. No. 43418, U.S.N.M. 



Ptilodictya obllqua (Ringueberg). 



Stictopora obliqua Ringueberg, Proc. Acad. Nat. Sci. Philadelphia, 1884, p. 146, 



pi. 2, figs. 2, 2a. 



Ptilodictya obliqua Miller, N. A. Geol. Pal., 1889, p. 319. 

 Clinton: Lockport, New York. 



Observation. Defined and figured in such a manner that it is questionable 

 whether it can be recognized. 



PTILODICTYA PAVONIA D'Orbigny. See Escharopora pavonia. 

 PTILODICTYA PAVONIA Boule and Thevenin. See Peronopora decipiens. 

 PTILODICTYA PERELEQANS Ulrich. See Graptodictya perelegans. 



