1054 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Pseudocrinites perdewi Schuchert. 



Pseudocrinites perdewi Schuchert, Amer. Geol., 32, 1903, p. 238; Smiths. Misc. 

 Coll., 47, 1904, p. 236, pi. 36, figs. 1-3; pi. 39, figs. 8-10; fig. 32; Maryland 

 Geol. Surv., Low. Dev., 1913, p. 242, pi. 34, figs. 5-7; pi. 35, figs. 8-10. 



Helderbergian (Keyser): Near Keyser, West Virginia. 



Eolotype and paratype. — Cat. No. 35072, U.S.N.M. 



Pseudocrinites steilatus Schuchert. 



Pseudocrinites steilatus Schuchert, Amer. Geol., 32, 1903, p. 236; Smiths. Misc. 

 Coll., 47, 1904, p. 232, pi. 35, figs. 8, 9; pi. 39, fig. 7; Maryland Geol. Surv., 

 Low. Dev., p. 239, 1913, pi. 33, figs. 13, 14; pi. 35, fig. 7. 



Helderbergian (Keyser): Keyser, West Virginia. 



Eolotype.- -Cat. No. 35069, U.S.N.M. 



Pseudocrinites subquadratus Schuchert. 



Pseudocrinites subquadratus Schuchert. Smiths. Misc. Coll., 47, 1904, p. 234, pi. 

 35, figs. 4, 5; Maryland Geol. Surv., Low. Dev. 1913, p. 237, pi. 34, figs. 1, 2. 

 Helderbergian (Keyser): Devil's Backbone, near Cumberland, Maryland. 

 Eolotype.— Cat. No. 35067, U.S.N.M. 



Pseudocrinus Haeckel. See Pseudocrinites Pearce. 



PSEUDOHORNERA Roemer. Genotype: Retepora diffusa Hall. 



Drymotrypa Ulrich, Geol. Surv. Illinois, 8, 1890, p. 399.— Miller, N. A. Geol. Pal., 



1st App., 1892, p. 684.— Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 



1900, p. 235.— Grabau, Bull. New York State Mus., 45, 1901, p. 169; Bull. 



Buffalo Soc. Nat. Sci., 7, 1901, p. 169.— Grabau and Shimer, N. A. Index 



Fossils, 1, 1907, p. 141. 

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



525. 

 Pseudohornera Roemer, Leth. geog., Leth. Pal., 1, Atlas, 1876, expl. pi. 12, fig. 



2.— Bassler, Bull. U. S. Geol. Surv., 292, 1906, p. 49; Bull. U. S. Nat. Mus., 



77, 1911, p. 172. 



Pseudohornera dichotoma (Ulrich). 



Drymotrypa dichotoma Ulrich, Geol. Surv. Illinois, 8, 1890, p. 399, pi. 53, fig. 6. 

 Trenton: Montreal, Quebec. 

 Eolotype— Cat. No. 43388, U.S.N.M. 



Pseudohornera diffusa (Hall). 



Retepora diffusa Hall, Pal. New York, 2, 1852, p. 160, pi. 40C, figs. la-f. 

 Drymotrypa diffusa Ulrich, Geol. Surv. Illinois, 8, 1890, pi. 53, figs. 7-7b — 



Grabau, Bull. New York State Mus., 45, 1901, p. 169, fig. 69; Bull. Buffalo 



Soc. Nat. Sci., 7, 1907, p. 169, fig. 69.— Grabau and Shimer, N. A. Index 



Fossils, 1, 1907, p. 142, fig. 197. 

 Pseudohornera diffusa Roemer, Leth. geog. Leth. Pal., 1, 1876, Atlas, pi. 12, fig. 



2.— Bassler, Bull. U. S. Geol. Surv., 292, 1906, p. 50, pi. 23, figs. 6-9; pi. 18, 



figs. 1-3. 

 Clinton (Rochester): Lockport and Rochester, New York; Grimsby and Hamilton, 



Ontario. 

 Plesiotype.—Q*X. N. 43389, U.S.N.M. 



Pseudohornera niagarensis (Hall). 



Fenestella n. sp. Hall, Pal. New York, 2, 1852, pi. 40D, fig. 4. 



Thamniscus? Niagarensis Hall, 28th Ann. Rep. New York State Mus. (doc. ed.), 

 1876, pi. 11, figs. 22-25; ibid., mus. ed., 1879, p. 126, pi. 11, figs. 22-25; 11th 

 Ann. Rep. Indiana Geol. Nat. Hist., 1882, p. 254, pi. 10, figs. 22-25.— Lesley, 

 Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1185, figs. — Simpson, 14th Ann. 

 Rep. State Geol. New York for 1894, 1897, pi. 11, figs. 15-17. 



