Catalogue of the Genera and Species of Stelleroidea. 
27 
1873 Ony chaster Meek and Worthen, Geol. Surv. Illinois, V, p. 474. 
1879 Onychaster Zittel, Handb., I, p. 443. 
1889 Onychaster Miller, N. Am. Geol. Pal., p. 204. 
1893 Onychaster Stiirtz, Verh. nat. Ver. preuss. Rheinl., L, p. 30. 
1897 Onychaster Gregory, Proc. Zool. Soc. London, p. 1040. 
1899 Onychaster Stiirtz, Verh. nat. Ver. preuss. Rheinl., LVI, p. 183. 
1909 Onychaster Schondorf, Jahrb. nass. Ver. Naturk., LXII, 
p. 47—61. 
1910 Onychaster Schondorf, Ibid., LXIII, p. 240. 
1910 Onychaster Schondorf, Palaeontogr., LVII, p. 59. 
1914 Onychaster Schuchert, Bull. 88, U. S. Nat. Mus. 
Genoholotype: O. flexilis Meek and Worthen. 
asper Miller 
1892 Onychaster asper Miller, 17th Rep. Geol. Surv. Indiana, 
p. 684, pl. 12, f. 3—5; adv. ext., 1891, p. 74, pl. 12, f. 3—5. 
1892 Onychaster asper Miller, N. Am. Geol. Pal., lst App., p. 680, 
f. 1240; 2d App., 1897, p. 749, f. 1366. 
1894 Onychaster asper Keyes, Missouri Geol. Surv., IV, p. 131. 
1914 Onychaster asper Schuchert, Bull. 88, U. S. Nat. Mus. 
Lower Carbonic (Keokuk) of United States. Boonville, Mo. 
barrisi (Hali) 
1861 Protaster ? barrisi Hali, Dese. N. Sp. Crin., p. 18. 
1869 Onychaster ? barrisi Meek and Worthen, Proc. Acad. Nat. 
Sci. Pliila., XXI, p. 83. 
1873 Onychaster ? barrisi Meek and Worthen, Geol. Surv. Illinois, 
V, p. 476, pl. 10, f. Ia — d. 
1914 Onychaster barrisi Schuchert, Bull. 88, U. S. Nat. Mus. 
Lower Carbonic (Burlington) of United States. Burlington, Iowa. 
confragosus Miller 
1892 Onychaster confragosus Miller, 17 th Rep. Geol. Surv. Indi- 
ana, p. 684, pl. 12, f. 6, 7 ; adv. ext., 1891, p. 74, pl. 12, f. 6, 7. 
1914 Onychaster confragosus Schuchert, Bull. 88, U. S. Nat. Mus. 
Lower Carbonic (Keokuk) of United States. Boonville, Mo. 
demissus Miller 
1892 Onychaster demissus Miller, 17 th Rep. Geol. Surv. Indiana, 
p. 685, pl. 12, f. 8 — 10; adv. ext., 1891, p. 75, pl. 12, f. 8—10. 
1892 Onychaster demissus Miller, N. Am. Geol. Pal., lst App., 
p. 680, f. 1241. 
1914 Onychaster demissus Schuchert, Bull. 88, U. S. Nat. Mus. 
Lower Carbonic (Keokuk) of United States. Boonville, Mo. ; 
Crawfordsville, Ind. 
flexilis Meek and Worthen 
1868 Onychaster flexilis Meek and Worthen, Geol. Surv. Illinois, 
III, p. 526, f. A— X). 
1869 Onychaster flexilis Meek and Worthen, Proc. Acad. Nat. Sci. 
Phila., XXI, p. 83. 
1873 Onychaster flexilis Meek and Worthen, Geol. Surv. Illinois, V, 
p. 510, pl. 16, f. 3 a — 1. 
1879 Onychaster flexilis Zittel, Handb., I, p. 444, f. 314. 
1889 Onychaster flexilis Miller, N. Am. Geol. Pal., p. 264, f. 374. 
1909 Onychaster flexilis Schondorf, Jahrb. nass. Ver. Naturk., 
LXII, p. 47—61. 
1910 Onychaster flexilis Schondorf, Ibid., LXIII, p. 240. 
1914 Onychaster flexilis Schuchert, Bull. 88, U. S. Nat. Mus. 
Lower Carbonic (Keokuk) of United States. Crawfordsville, Ind. 
Ophiopege Bohm = Aganaster 
Ophiura obtusa Eichwald = Protaster (Ophiura) obtusa 
