BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 851 



Nematopora alteruata Ulrich. 



Nematopora alternata Ulrich, Geol. Surv. Illinois, 8, 1890, p. 646, pi. 29, figs. 8, 



8a.— Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 4. n >, pi. 1, fig. 6. 

 Upper Medinan (Girardeau): Alexander County, Illinois. 



Nematopora conferta Ulrich. 



Nematopora conferta Ulrich, Jour. Cincinnati Soc. Nat. Hist., 12, 1890, p. 198, 



fig. 22; Geol. Minnesota, 3, 1893, p. 20G, pi. 3, figs. 21-23.— Bassler, Zittel- 



Eastman Textb. Pal., 1913, p. 343, fig. 501c 

 Trenton (Prosser): Cannon Falls, Minnesota. 

 Holotype.— Cat. No. 43687, U.S.N.M. 



Nematopora consueta Bassler. 



Nematopora delicatula Ulrich (not Ulrich, 1890), Geol. Minnesota, 3, 1893, p. 206, 



pi. 3, figs. 26, 27. 

 Nematopora consueta Bassler, Bull. U. S. Nat. Mus., 77, 1911, pp. 155, 156, fig. 76. 

 Trenton (Prosser) : Near Cannon Falls, Minnesota. 

 Middle Ordovician (Kuckers): Near Jewe, Esthonia, Russia. 

 Cotypes — Cat. No. 44100, U.S.N.M. 



Nematopora delicatula Ulrich. 



Nematopora delicatula Ulrich (not Ulrich, 1893), Geol. Surv. Illinois, 8, 1890, p. 

 646, pi. 29, figs. 11, lib.— Simpson, 14th Ann. Rep. State Geol. New York for 

 1894, 1897, p. 553, figs. 124, 125— Bassler, Bull. U. S. Nat. Mus., 77, 1911, p. 

 155, fig. 76a, b.— Savage, Bull. Geol. Surv. Illinois, 23, 1913. p. 43, pi. 1, fig. 4. 



Upper Medinan (Girardeau): Alexander County, Illinois. 



Nematopora delicatula Ulrich (1893). See Nematopora consueta. 



Nematopora Formosa Billings. See Helopora formosa. 



Nematopora fragilis Ulrich. 



Nematopora fragilis Ulrich, Geol. Surv. Illinois, 8, 1890, p. 646, pi. 29, figs. 10-10c— 



Bassler, Bull. U. S. Nat. Mus., 77, 1911, pp. 157, 158, fig. 78— Savage, Bull. 



State Geol. Surv. Illinois, 23, 1913, p. 44, pi. 1, fig. 3. 

 Upper Medinan (Girardeau): Alexander County, Illinois. 

 Silurian (Lyckholm): Island of Dago, Baltic Sea. 



Nematopora grauosa Ulrich. 



Nematopora granosa Ulrich, Jour. Cincinnati Soc. Nat. Hist., 12, 1890, p. 196, 



fig. 20; Geol. Minnesota, 3, 1893, p. 205, pi. 3, figs. 17-20. 

 Trenton (Prosser): Cannon Falls, Minnesota. 

 Cotypes.— Cat. No. 43688, U.S.N.M. 



Nematopora lineata (Billings). 



Helopora lineata Billings, Cat. Sil. Foss. Anticosti, 1866, p. 36. 



Nematopora lineata Ulrich, Geol. Surv. Illinois, 8, 1890, p. 646, pi. 29, figs. 7-7e.— 

 Bassler, Bull. U. S. Nat. Mus., 77, 1911, pp. 158, 159, fig. 79. 



Richmond (Charleton) and Gamachian (Ellis Bay): Junction Cliff, eic, Anti- 

 costi. 



Early Silurian (Borkholm): Borkholm, Esthonia. 



Plesioly pes. --Cat. No. 43384, U.S.N.M. 



Nematopora? lineopora Ulrich. See Helopora lineopora. 



Nematopora macropora (Hall). 



Trematopora? (Trachypora?) macropora Hall, Trans. Albany Inst., 10, 1883, p. 60 

 (abstract, 1879, p. 4); 11th Ann. Rep. Indiana Geol. Nat. Hist., 1882, p. 236. 

 Niagaran (Waldron): Waldron, Indiana. 



