464 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



DUNCANELLA Nicholson. Genotype: D. borealis Nicholson. 



Duncanella Nicholson, Ann. Mag. Nat. Hist., 4th ser., 13, 1874, p. 333. Zittel, 

 Handb. Pal., 1, 1879, p. 226 Hoemer, Leth. geog., pt. 1, Leth. Pal., 1883, 

 p. 396. Miller, N. A. Geol. Pal., 1889, p. 187. Freeh, Palseontographica, 37, 

 1890, p. 81. Sherzer, Amer. Geol., 7, 1891, pp. 278-283. Girty, 19th Ann. 

 Rep. U. S. Geol. Surv., 1899, p. 556; Zittel-Eastman Textb. Pal., 1, 1900, 

 p. 74; 2d ed., 1913, p. 82. Grabau and Shimer, N. A. Index Fossils, 1, 1906, 

 p. 76. 



Duncanella borealis Nicholson. 



Dunca-nella bcrealis Nicholson, Ann. Mag. Nat. Hist., 4th ser., 13, 1874, p. 334, 



fig. Miller, N. A. Geol. Pal., 1889, p. 187, fig. 172. Grabau and Shimer, 



N. A. Index Fossils, 1, 1906, p. 76. 

 Streptelasma (Duncanella) borealis Hall, 28th Rep. New York State Mus. Nat. 



Hist., mus. ed., 1879, p. 106, pi. 5, figs. 7, 8; llth Ann. Rep. Indiana Dep. 



Geol. Nat. Hist., 1882, p. 226, pi. 1, figs. 7-10; pi. 4, fgs. 7, 8. 

 Streptelasma borealis Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1084, 



figs. 

 Streptelasma minima Hall, 28th Rep. New York State Mus. Nat. Hist., doc. ed., 



1875, pi. 5, figs. 7, 8. 



Niagaran (Waldron): Waldron, Indiana; Newsom, Tennessee. 

 Clinton (Osgood): Osgood, Indiana. 



DUNCANELLA PANNINGANA Girty. See Ditcecholasma fanninganum. 

 DYBOWSKIA Waagen and Pichl. See Fistulipora McCoy. 

 DYBOWSKIELLA Waagen and Wentzel. See Fistulipora McCoy. 



DTEEIA Ulrich. Genotype: Cyrtolites costatus James. 



Dyeria Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 1044. 



Dyeria costata (James). 



Cyrtolites costatus James, Amer. Jour. Sci., 3d ser., 3, 1872, p. 26. Meek, Geol. 



Surv. Ohio, Pal., 1, 1873, p. 150, pi. 13, figs, la, b, c. 

 Bucania costatus Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 308. 

 Dyeria costata, Ulrich, Geol. Minnssota, 3, pt. 2, 1897, p. 1044. text fig. 8.-- Grabau, 



Amer. Nat., 36, 1902, p. 939. 



Maysville (Corryville) : Cincinnati, Ohio, and vicinity. 

 Pleswtypes. Cat. No. 45796, U.S.N.M. 



DYSTACTOPHYCUS Miller and Dyer. 



Genotype: D. mammillanum Miller and Dyer. 



Dystactophycus Miller and Dyer, Cont. to Pal., 2, 1878, p. 2. James, Jour. 

 Cincinnati Soc. Nat. Hist., 7, 1885, p. 163. Miller, N. A. Geol. Pal., 1, 1889, 

 p. 117. 



Dystactophycus mammillanum Miller and Dyer. 



Dystactophycus mammillanum Miller and Dyer, Cont. to Pal., 2, 1878, p. 3, pi. 



3, fig. 4. James, Jour. Cincinnati Soc. Nat. Hist., 18, 1895, p. 125. Miller, 



N. A. Geol. Pal., 1889, p. 118, fig. 34. 

 Maysville (Corryville): Near Morrow, Ohio. 



DYSTACTOSPONGIA Miller. Genotype: D. insolens Miller. 



Dystactospongia Miller, Jour. Cincinnati Soc. Nat. Hist., 5, 1882, p. 42. Miller, 



N. A. Geol. Pal., 1889, p. 158. James, J. F., Jour. Cincinnati Soc. Nat. 



Hist., 14, pt. 1, 1891, p. 70. 



