496 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Erldotrypa brlareus — Continued. 



Monotrypella briarea Ulrich, Jour. Cincinnati Soc. Nat. Hist., 5, 1882, pp. 248, 



256 (gen. ref.). 

 Eridotrypa briareus Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 



237.— Nickles, Bull. Kentucky Geol. Surv. No. 5, 1905, p. 43, pi. 1, figs. 4, 5. 

 Trenton: Covington, Kentucky. An abundant species in central Kentucky 



(Cynthiana) and central Tennessee (Bigby, Cathey). 



Erldotrypa echinata (Hall). 



Trematopora echinata Hall, 28th Ann. Rep. New York State Mus., doc. ed., 1876, 

 pi. 11, figs. 1-5; ibid., Mus. ed., 1879, p. 112, pi. 11, figs. 1-5; 11th Ann. Rep., 

 Indiana Geol. Nat. Hist., 1882, p. 233, pi. 10, figs. 1-5.— Lesley, Geol. Surv. 

 Pennsylvania, Rep. P 4, p. 1200, figs. 



Eridotrypa echinata Ulrich, Geol. Minnesota, 3, 1893, p. 265. 



Niagaran (Waldron): Waldron, Indiana. 



Erldotrypa exigua Ulrich. 



Eridotrypa exigua Ulrich, Geol. Minnesota, 3, 1893, p. 266, pi. 26, figs. 17-19.— 



Bassler, Bull. U. S. Nat. Mus., 77, 1911, pp. 245, 246, fig. 140. 

 Trenton: Cannon Falls, Minnesota (Prosser); Trenton Falls, New York; Chimney 



Point, Vermont. 

 Middle Ordovician (Jewe) : Near Jewe, Esthouia, Russia. 

 Cotypes.—CdLt. No. 43535, U.S.N.M. 



Eridotrypa mutabilis Ulrich. See Eridotrypa sedilis. 



Eridotrypa mutabilis var. minor Ulrich. See Eridotrypa sedilis minor. 



Eridotrypa nodulosa Bassler. 



Eridotrypa nodulosa Bassler, Bull. U. S. Geol. Surv., 292, 1906, p. 30, pi. 11, figs. 



14, 15; pi. 25, figs. 1-3. 

 Clinton (Rochester) : Lockport and Rochester, New York. 

 Co^ypes.— Cat. No. 35524, U.S.N.M. 



Erldotrypa parvulipora Ulrich and Bassler. 



Eridotrypa parvulipora Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 



1913, p. 272, pi. 43, figs. 5-8; pi. 44, figs. 7, 8. 

 Helderbergian (Keyser): Keyser and Cherry Run, West Virginia; Cumberland, 



Maryland. 

 Cotypes— Cat. No. 53643, U.S.N.M. 



Erldotrypa similis Bassler. 



Eridotrypa similis Bassler, Bull. U. S. Geol. Surv., 292, 1906, pp. 31, 32, pi. 12, 



figs. 10-14; pi. 26, figs. 1, 2. — Grabau and Shimer, N. A. Index Foesile, 1, 



1907, p. 134. 

 Clinton (Rochester): Lockport, etc., New York; Grimsby and Thorold, Ontario. 

 Cotypes.— Cat. No. 35519, U.S.N.M. 



Erldotrypa simulatrbc (Ulrich). 



Batostomella simulatrix Ulrich, Geol. Surv. Illinois, 8, 1890, p. 432, pi. 35, figs. 



1-lg. 

 Eridotrypa simulatrix Ulrich, Geol. Minnesota, 3, 1893, p. 265. — Cumings, 32d 



Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 828, pi. 16, figs. 4, 4b; pi. 



29, figs. 5, 5a. 

 Monticulipora simulatrix J. F. James, Jour. Cincinnati Soc. Nat. Hist., 16, 1894, 



p. 194. 

 Richmond: Clarksville, Waynes\dlle, and other localities in Ohio; Weisberg and 



Versailles, Indiana; Savannah, Illinois; Anticosti. 

 Cotypes.— C&t. No. 43744, U.S.N.M. 



