390 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Dekayella prrenuntia multipora Ulrich. 



Dekayella pnenuntia var. multipora Ulrich, Geol. Minnesota, 3, 1893, p. 272, 



pi. 23, figs. 44-47. 

 Black River (Decorah) : Minneapolis, St. Paul, and Goodhue and Fillmore 



Counties, Minnesota. 

 Holotype.Czt. No. 43531, U.S.N.M. 



Dekayella praenuntia naevigera Ulrich. 



Dekayella prsemmtia var. nsevigera Ulrich, Geol. Minnesota, 3, 1893, p. 271. 



Bassler, Bull. U. S. Nat. Mus., 77, 1911, p. 207. 

 Black River (Decorah) : Fillmore County, Minnesota. 

 Middle Ordovician (Wassalem) : Esthonia, Russia. 

 Holotype.Czt. No. 43532, U.S.N.M. 



Dekayella praenuntia simplex Ulrich. 



Dekayella prsemmtia var. simplex Ulrich, Geol. Minnesota, 3, 1893, p. 271, pi. 



23, figs. 39-42. Bassler, Bull. U. S. Nat. Mus., 77, 1911, p. 207, fig. 111. 

 Black River (Decorah) : Minneapolis and St. Paul, Minnesota 

 Middle Ordovician (Wassalem) : Esthonia, Russia. 

 Cotypes.G*t. No. 43529, U.S.N.M. 



DEKAYELLA ROBUSTA Foord. See Dekayella ulrichi. 



Dekayella singularis (Ulrich). 



Heterotrypa singularis Ulrich, Geol. Surv. Illinois, 8, 1890, p. 415, pi. 37, figs. 3-3e; 



Geol. Minnesota, 3, 1893, p. 268. Simpson, 14th Ann. Rep. State Geol. New 



York for 1894, 1897, fig. 147 (p. 579). 

 Monticulipora singularis J. F. James, Jour. Cincinnati Soc. Nat. Hist., 18, 1895, 



P- 77. 

 Dekayella singularis Ulrich and Bassler, Smiths. Misc. Coll. Quart., 47, 1904, 



p. 27 (gen. ref.). 



Richmond (Fernvale): Wilmington, Illinois; Tennessee; Wisconsin. 

 Sections of cotype. Cat. No. 43750, U.S.N.M. 



Dekayella trentonensls (Ulrich). 



Dekayia trentonensis Ulrich, Jour. Cincinnati Soc. Nat. Hist., 5, 1883, p. 151, 



pi. 6, figs. 6, 6a; Geol. Minnesota, 3, 1893, p. 274. 

 Dekayella trentonensis Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, 



p. 227. Nickles, Bull. Kentucky Geol. Surv., 5, 1905, p. 42, pi. 1, fig. 3. 

 Trenton: Burgin and Frankfort, Kentucky (Wilmore); St. Paul and Cannon 



Falls, Minnesota (Prosser). 

 HolotypeCat. No. 43660, U.S.N.M. 



Dekayella ulrichi (Nicholson). 



Chaetetes Fletcheri (not Milne-Edwards and Haime) Nicholson, Quart. Jour. 

 Geol. Soc. London, 30, 1874, p. 504, pi. 29, figs. 6, 6a; Pal. Ohio, 2, 1875, 

 p. 197, pi. 21, figs. 7, 7a; Ann. Mag. Nat. Hist., 4th ser., 18, 1876, p. 90, pi. 5, 

 fig. 14. Quenstedt, Rcehren- und Sternkorallen, 1891, p. 83, pi. 146, fig. 27. 



Monticulipora (Heterotrypa) Ulrichii Nicholson, Genus Monticulipora, 1881, p. 

 131, fig. 22. 



Monticulipora ulrichii Hall, 12th Ann. Rep. Indiana Geol. Nat. Hist., 1883, p. 

 249, pi. 11, fig. 10. James and James, Jour. Cincinnati Soc. Nat. Hist., 10, 

 1888, p. 179. James, ibid., 16, 1894, p. 201. 



Dekayella ulrichi Ulrich, Jour. Cincinnati Soc. Nat. Hist., 7, 1883, pp. 91, 153. 

 Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 227. Cumings, 

 Amer. Geol., 28, 1901, p. 374. Nickles, Bull. Kentucky Geol. Surv., 5, 





