BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 463 



DREPANELLA MACRA Ulrich (1894). See Drepanella elongata. 



Drepanella macra Ulrich. 



Drepanella macer Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1894, p. 119, pi. 



8, figs. 4a-c. 

 Drepanella macra Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 291, fig. 



17, pi. 41, figs. 12-14. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 



350, f:g. lGG4a-c. 



Stones Paver (Lebanon): Lavergne, Lebanon, and Columbia, Tennessee. 

 Holotype.Csit. No. 41373, U.S.N.M. 



Drepanella nltida (Ulrich). 



Drepanella crassinoda nitida Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1890, 



p. 119, pi. 8, figs. 3a, b. 

 Drepanella nitida Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 291, 



fig. 19, pi. 41, figs. 7, 8. 



Black River (Lowville): High Bridge, Kentucky. 

 Holotype,Ca,t. No. 41378, U.S.N.M. 



Drepanella richardsoni (Miller). 



Beyrichia richardscni Miller, Cincinnati Quart. Jour. Sci., 1, 1874, p. 347, fig. 40; 



N. A. Geol. Pal., 1889, p. 535, fig. 978. 

 Drepanclla richardsoni Ulrich, Jour. Cincinnati Soc. Nat. Hist., 13, 1890, p. 117. 



Ulrich and Bassler, Proc. U. S. Nat. Mus., 35, 1908, p. 292, fig. 23, pi. 41, 



fig. 15. 



Richmond (Whitewater): Wilmington, Ohio. 

 Pksiotype.Csti. No. 41407, U.S.N.M. 



Drepanella richardsoni canadensis Ulrich. 



Drepanella richardsoni var. canadensis Ulrich, Jour. Cincinnati Soc. Nat. Hist., 



13, 1890, p. 118. 

 Richmond: Oakville, Ontario. 

 Cotypes.C&t. No. 41374, U.S.N.M. 



Drepanella symmetrlca (Emerson). 



Beyrichia symmetrica Emerson, Narrative Hall's 2d Arctic Exped., U. S. Navy 



Dep., 1879, p. 581, fig. 9. 

 Richmond: Frobisher Bay, Baffin Land. 

 Plastotype.Czt. No. 60729, U.S.N.M. 



DREPANODUS Pander. Genotype: D. arcuatus Pander. 



Drepanodus Pander, Mon. d. foss. Fische Sil. Syst., 1856, p. 20. Miller, N. A. 

 Geol. Pal., 1889, p. 518. Grabau and Shimer, N. A. Index Fossils, 2, 1910, 

 p. 245. 



Drepanodus arcuatus Pander. 



Drepanodus arcuatus Pander, Mon. foss. Fish. Sil. Syst., 1856, p. 20, tab. 1, figs. 



2, 4, 5. Hinde, Quart. Jour. Geol. Soc. London, 35, 1879, p. 357, pi. 15, figs. 



7, 8. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 245, fig. 1537, d, e. 

 Middle Ordovician: Esthonia, Russia. 

 Maysville (Pulaski): Garrison Common, near Toronto, Ontario. 



DREPANOPTERUS Laurie. See Stylonurus subgenus Drepanopterus. 

 DRYMOPORA Davis. See Syringopora subgenus Drymopora. 

 DRYMOTRYPA Ulrich. See Pseudohornera Roemer. 



