1306 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Troostocrinus reinwardtl Continued. 



Troostocrinus (Pentatrematites) reinwardti Foerste, Jour. Geol., 11, 1903, p. 712. 

 Clavseblastus reinwardtii Hambach, Trans. Acad. Sci. St. Louis, 13, 1903, p. 44. 

 Niagaran: Decatur, Wayne, and Perry Counties, Tennessee (Brownsport); Louis- 

 ville, Kentucky (Louisville). 

 Plesiotype.C&t. No. 33071, U.S.N.M. 



Troostocrinus subcyllndricus (Hall and Whitfield). 



Pentremites subcylindrica Hall and Whitfield, Geol. Surv. Ohio Pal., 2, 1875, 



p. 129, pi. 6, fig. 13. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, 



p. 622, fig. 

 Troostocrinus subcylindrica (Hall) Etheridge and Carpenter, Ann. Mag. Nat. 



Hist., 5th ser. 9, p. 249 (gen. ref.). 

 Metablastus? subcylindrica Etheridge and Carpenter, Cat. Blastoidea, 1886, 



p. 198. 

 Niagaran (Guelph): Yellow Springs, Ohio. 



TROPIDODISCUS Meek. See Oxydiscus Koken. 



TRYBLIDIUM Lindstrom. Genotype: T. unguis Lindstrom. 



Tryblidium Lindstrom, Fraginenta Silurica, 1880, p. 15; Kongl. Sven. Vet.-Akad. 

 Handl., 19, 1881, No. 6, p. 52. Zittel, Handb. Pal., 2, 1882, p. 176. Whit- 

 eaves, Pal. Foss., 3, pt. 1, 1884, p. 30. Whitfield, Bull. Amer. Mus. Nat. 

 Hist., 1, 1886, p. 303. Miller, N. A. Geol. Pal., 1889, p. 429. Koken, Die 

 Leitfossilien, Leipzig, 1896, p. 95, figs. 73A-C; Bull. Acad. Imp. Sci. St. 

 Petersburg, 7, 1897, p. 113. Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 

 1897, pp. 821-824. Berkey, Amer. Geol., 21, 1898, pp. 279-280. Pilsbry, 

 Zittel-Eastman Textb. Pal., 1, 1900, p. 442. Cumings, 32d Ann. Rep. Dep. 

 Geol. Nat. Res. Indiana, 1908, p. 935. Dall, Zittel-Eastman Pal., 2d ed., 

 1913, p. 521. 



Triblidium Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 603. 



Tryblidium? acutum Whitfield. 



Tryblidium? acutum Whitfield, Bull. Amer. Mus. Nat. Hist., 2, 1889, p. 45, 



pi. 7, figs. 9-11. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 



1234, fig. 

 Canadian (Beekmantown) : Near Beekmantown, New York. 



Tryblidium barabuensis (Whitfield^. 



Metoptoma Barabuensis Whitfield, Ann. Rep. for 1877, Wisconsin Geol. Surv., 



1878, p. 60; Geol. Wisconsin, 4, 1882, p. 195, pi. 3, figs. 16, 17. Chamberlin, 

 Geol. Wisconsin, 1883, 1, p. 142, fig. Sardeson, Bull. Minnesota Acad. Nat. 

 Sci., 4, 1896, p. 97. 



Tryblidium barabuensis Berkey, Amer. Geol., 21, 1898, p. 281, pi. 20, figs. 18, 19; 



also p. 291. Sardeson, Jour. Geol., 11, 1903, p. 479, fig. 2. 

 Triblidium barabuensis Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 604, 



figs. 802e, f. 

 Ozarkian (Mendota): East of Baraboo, Wisconsin. 



TRYBLIDIUM CANADENSE Whiteaves. See Archinacella canadensis. 

 TRYBLIDIUM CONICUM Whitfield. See Scenella cassinensis. 



Tryblidium cornutaforme (Walcott). 



Metoptoma cornutaforme Walcott, 32d Rep. New York State Mus. Nat. Hist., 



1879, p. 129. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 402, figs. 

 Triblidium cornutaforme Walcott, Smiths. Misc. Coll., 57, 1912, p. 263, pi. 41, 



figs. 12-14. 



Ozarkian or Upper Cambrian (Hoyt) : Four miles west Saratoga Springs, New York. 

 Plesiotypes. Cat. Nos. 58548-58550, U.S.N.M. 



