BIBLIOGRAPHIC LIST OF GENEBA AND SPECIES. 389 



Deiphon forbesl Continued. 



Sphserexochus pisurn Foerste. Geol. Surv. Ohio, 7, 1895, p. 528, pi. 37A, figs. 



14a-14b. 



Deiphon piaum Foerste, Amer. Jour. Sci., 4th ser., 18, 1904, p. 340. 

 Silurian: Bohemia and England; Dayton, Ohio (Brassfield); Lockport, New 

 York (Rochester); Arkansas (St. Clair). 



DEIPHON PISUM Foerste. See Deiphon forbesi. 

 DEIROCERAS Hyatt. See Actinoeeras subgenus Deiroceras. 



DEKATELLA Ulrich. Genotype: Dekayella obscura Ulrich 



Dekayella Ulrich, Jour. Cincinnati Soc. Nat. Hist., 5, 1882, p. 155; ibid., 6, 1883. 

 p. 90. Miller, N. A. Geol. Pal., 1889, p. 184. Ulrich, Geol. Surv. Illinois, 8, 

 1890, p. 372; Geol. Minnesota, 3, 1893, p. 269; Zittel's Textb. Pal. (Engl. ed.), 

 1896, p. 273. Simpson, 14th Ann. Rep. State Geol. New York for 1894, 1897, 

 p. 589. Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 31. 

 Cumings, Amer. Geol., 29, 1902, p. 200. Ulrich and Bassler, Smiths. Misc. 

 Coll., 47, 1904, pp. 24, 27. Grabau and Shimer, N. A. Index Fossils, 1, 

 1907, p. 132. Bassler, Bull. U. S. Nat. Mus., 77, 1911, p. 205; Zittel-Eastman 

 Textb. Pal., 1913, p. 333. 



IKAYELLA CYSTATA Cumings. See Heterotrypa frondosa. 



>kayella foliacea Ulrich and Bassler. 

 Dekayella foliacea Ulrich and Bassler, Smiths. Misc. Coll., Quart., 47, 1904, p. 28, 



pi. 7, figs. 10-12. 



Trenton (Cynthiana): Lexington, Kentucky. 

 Holotype.Gzt. No. 43187, U.S.N.M. 



)kayella obscura Ulrich. 



Dekayella obscura Ulrich, Jour. Cincinnati Soc. Nat. Hist., 6, 1883, p. 89, pi. 1, 

 figs. 4-4b; Zittel's Textb. Pal. (Engl. ed.), 1896, fig. 454 (p. 274). Simpson, 

 14th Ann. Rep. State Geol. New York for 1894, 1897, figs. 180-182 (p. 589). 

 Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 132. Bassler, Zittel- 

 Eastman Textb. Pal., 1913, p. 333, fig. 480. 



Dekayia obscura Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 

 816, pi. 14, figs. 3, 3a. 



Eden (McMicken): Cincinnati, Ohio, and vicinity. 



Cotypes.Czt. No. 43659, U.S.N.M. 



DEKAYELLA PERFRONDOSA PROLIFICA Cumings. See Heterotrypa subramosa pro- 

 lifica. 



Dekayella praenuntla Ulrich. 



Dekayella pramuntia Ulrich, Geol. Minnesota, 3, 1893, p. 270, pi. 23, figs. 32^7. 

 Simpson, 14th Ann. Rep. State Geol. New York for 1894, 1897, figs. 177-179 

 (p. 589). Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 132, figs. 

 188b, 190b. Bassler, Bull. U. S. Nat. Mus., 77, 1911, pp. 205, 206, fig. 111. 



Black River (Decorah): Minneapolis, etc., Minnesota; Iowa. 



Middle Ordovician (Wassalem and Kuckers): Esthonia, Russia. 



Holotype.C&t. No. 43528, U.S.N.M. 



Dekayella praenuntia echinata Ulrich. 



Dekayella prsenuntia var. echinata Ulrich, Geol. Minnesota, 3, 1893, p. 271, pi. 



23, figs. 32-38. 



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

 . Cat. No. 43530, U.S.N.M. 



