WITH LIST OF SPECIMENS. 
23 
Devonian, Cornifcrous Limestone: Columbus, Ohio, U.S.A. [E. 659a.] 
Presented by H. A. Nicholson. A micro-section and the two halves 
of the theca from which it was cut. 
-. Lower Devonian, Corniferous Limestone: Columbus, Ohio, 
U.S.A. [E. 659.] Presented by H. A. Nicholson. A theca in 
matrix. 
■-. Lower Devonian, Corniferous Limestone : Louisville, Kentucky, 
U.S.A. [E„ 818.] Presented by J. Brown. A damaged theca. 
-. Lower Devonian, Upper Helderberg: Clarke Co., Indiana, 
U.S.A. [E. 820.] Two thecas, rather obscured by matrix. 
-. Lower Devonian, Corniferous Limestone : Ealls of the Ohio, 
U.S.A. [E. 8174.] T. A. Worthen Coll, ex S. S. Lyon Coll. 
Three well-preserved thecas, one in chert. 
Nucleocrinus verneuili, var. pomum. Elceacrinus verneuili, var. 
pomum, “ may represent Olivanites globosus, Troost ” : P. Etheridge fil. 
& P. H. Carpenter, 1886, Cat. Blastoidea Brit. Mus. pp. 218, 219, pi. ii, 
f. 46. 
Elceacrinus verneuili , var. pomum, R. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. p. 219. C. Lower Devonian, Corni¬ 
ferous Limestone : Columbus, Ohio, U.S.A. [E. 660.] Presented by 
H. A. Nicholson. A theca, part of the type-material. 
Elceacrinus verneuili, var. pomum, P. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. p. 219. Lower Devonian, Corni¬ 
ferous Limestone : Clarke Co., Indiana, U.S.A. [E. 821.] Two 
thecas, part of the type-material. 
OLIVANITES, G. Troost, 1849 : v. Nucleocrinus. 
Olivanites angularis, S. S. Lyon, 1857: v. Nucleocrinus angu- 
laris. 
Olivanites globosus, nom. nud., G. Troost, 1849, Amer. Journ. Sci. 
(2) viii, p. 419 ; and 1850, Proc. Amer. Assoc. Adv. Sci. 1849, p. 62. 
Referred to Elceacrinus verneuili by C. E. Poemer, 1852, Lethsea Geogn., 
3 Aufl. ii Theil, p. 284; and B. E. Shumard, 1866, Trans. Acad. Sci. 
St. Louis, ii, p. 369: v. Nucleocrinus verneuili, var. pomum. 
Olivanites verneuili (Troost): G. Troost, 1849: v. Nucleocrinus 
verneuili. 
ORBITREMITES. 1 Orbitremites, nom. nud., J. E. Gray, 1840, 
Synopsis of the Contents of the British Museum, 42nd Edition, p. 63. 
Orbitremites, T. & T. Austin, 1842, Ann. Mag. Nat. Hist. (1) x, p. 111. 
1 The type-species of Granatocrinites, Troost, is G. cidariformis, which also is 
nomen nudum. The type-species of Grctnatocriniis, Hall, is Pentremites granulatus, 
Roemer, of which the structure is still quite unknown. The type-species of Granato- 
crinus, Eth. & Carp., is Pentremites norwoodi, Owen & Shumard. All of these must 
yield to Orbitremites , the meaning of which was fixed by T. & T. Austin’s use of it in 
1842. 
