774 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Lyriocrinus dactylus — Continued. 



Lyriocrinus (Rhodocrinus) dactylus Hall, 11th Rep. Geol. Nat. Hist. Indiana, 



1882, p. 271. 

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



Lyriocrinus melissa (Hall). 



Rhodocrinus melissa Hall, Trans. Albany Inst., 4, 1863, p. 198 (Abstract, p. 4); 



28th Rep. New York State Mus. Nat. Hist., doc. ed., 1875, 1877, pi. 15, figs. 



18-27. 

 Rhodocrinus (Lyriocrinus) melissa Hall, ibid., mus. ed., 1879, p. 139, pi. 15, 



figs. 18-27. 

 Lyriocrinus melissa Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 



1881, p. 379 (Rev. Pal., pt. 2, p. 205).— Hall, 11th Ann. Rep. Indiana Dep. 



Geol. Nat. Hist., p. 269, pi. 14, figs. 18-27; pi. 15, fig. 11.— Miller, N. A. Geol. 



Pal., 1889, p. 259, fig. 354.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 



1889, pp. 366, 367, figs.— Keyes, Missouri Geol. Surv., 4, for 1894, 1895, pi. 21, 



fig. 6. — Wachsmuth and Springer, Mem. Mus. Comp. Zool., Harvard, 20, 1897, 



p. 263, pi. 11, figs. 4a-f.— Weller, Bull. Chicago Acad. Sci., Nat. Hist. Surv., 

 . 4, pt. 1, 1900, p. 91, pi. 3, figs. 6-8.— Grabau and Shinier, N. A. Index Fossils, 



2, 1910, p. 550. 

 Niagaran: Waldron, etc., Indiana; Newsom, Tennessee (Waldron); Bridgeport, 



Romeo, and Joliet, Illinois (Racine). 



Lyriocrinus sculptilis (Hall). 



Rhodocrinus (Lyriocrinus) sculptilis Hall, 20th Rep. New York State Cab. Nat. 



Hist., 1868 (extras, 1865), p. 325; rev. ed., 1870, p. 368. 

 Lyriocrinus sculptilis Miller, N. A. Geol. Pal., 1889, p. 259 (gen. ref.). 

 Niagaran (?Racine): Waukesha, Wisconsin. 



Lyriocrinus sculptilis Miller. See Diabolocrinus vesperalis. 



Lyriopecten orbiculoides Grabau. See Amphiccelia orbiculoidea. 



LYRODESMA Conrad. Genotype: L. planum Conrad. 



Lyrodesma Conrad, Ann. Geol. Rep. New York, 1841, p. 51. — Hall, 1847, Pal. New 

 York, 1, 1847, p. 302.— McCoy, British Pal. Rocks, Foss., 1854, p. 272.— 

 Woodward, Man. Mollusca, pt. 2, 1854, p. 273.— Pictet, Traite de Pal., 2d ed., 

 3, 1855, p. 534— Hall, Canadian Nat. Geol., 1, 1856, p. 394; 10th Rep. New 

 York State Cab. Nat. Hist., 1857, p. 185 (Extr., p. 145); 15th Rep. New York 

 State Cab. Nat. Hist., 1862, pi. 11, fig. 5; 24th Rep. .New York State Cab. 

 Nat. Hist., 1872, p. 227 (Extr. 1871, p. 4).— Miller, Cincinnati Quart. Jour. 

 Sci., 1, 1874, p. 226.— Zittel, Handb. Pal., 2, Munich, 1881, p. 55.— Miller, 

 N. A. Geol. Pal., 1889, p. 487.— Ulrich, Geol. Surv. Ohio, 7, 1893, p. 682; Geol. 

 Minnesota, 3, 1894, pt. 2, p. 608.— Dall, Zittel-Eastman Textb. Pal., 1, 1900, 

 p. 378.— Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 481. 



Lyrodesma acuminatum Ulrich. 



Lyrodesma acuminatum Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 609, pi. 42, 



figs. 1-5. — Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 481, fig. 



641e-f. 

 Black River (Decorah): Chatfield, and near Cannon Falls, Minnesota. 

 Cotypes.— Cat. Nos. 46214, 46215, U.S.N.M. 



Lyrodesma acuminatum intermedium Ulrich. 



Lyrodesma acuminatum var. intermedium Ulrich, Geol. Minnesota, 3, pt. 2, 1894, 



p. 610, pi. 42, figs. 3-4, fig. 45h. 

 Black River (Decorah): Chatfield, and near Cannon Falls, Minnesota. 

 Trenton: Near Burgin, Kentucky. 

 Cotypes.— Cat. Nos. 46216, 46217, U.S.N.M. 



