13IJ3LIOGRAPHIC LIST OF GENERA AND SPECIES. 389 



Deiphou forbesi — Continued. 



Sphaerexochiis pisum Foerste, Geol. Surv. Ohio, 7, 1895, p. 528, pi. 37A, figs. 



14a-14b. 

 Deiphon pisum Foerate, Amer. Joxir. Sci., 4th ser., 18, 1904, p. 340. 

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



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



Deiphom pisum Foerste. See Deiphon forbesi. 

 Deiroceras Hyatt. See Actinoceras siibgenus Deiroceras. 



DEEAYELLA Ulrich. Genotype: Dekayella obscura Ulrich 



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

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

 1890, p. 372; Geol. Minnesota, 3, 1893, p. 269; Zittel'sTextb. 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. 



Dekayella cystata Cumings. See Heterotrypa frondosa, 



Dekayella 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.—C&i. No. 43187, U.S.N.M. 



Dekayella obscura Ulrich. 



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

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

 14lh 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. 



Co«i/pes.— Cat. No. 43659, U.S.N.M. 



Dekayella perfrondosa prolifica Cumings. See Heterotrypa subramosa pro- 

 lifica. 



Dekayella praenuntla Ulrich. 



Dekayella prsenuntia Ulrich, Geol. Minnesota, 3, 1893, p. 270, pi. 23, figs. 32-47.— 

 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, e{v., Minnesota; Iowa. 



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



Holotype.—Csit. No. 43528, U.S.N.M. 



Dekayella prsenuntia echinata Ulrich. 



Dekayella praenunlia var. echinata T'lrich. Geol. Minnesota, 3, 1893, p. 271. pi. 



23, figs. 32-38. 

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

 Cotypes.—G&t. No. 43530, U.S.N.M. 



