WITH LIST OF SPECIMENS. 
37 
Orophocrinus vents (Cumberland): R. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. pp. 97, 290, pi. xv, f. 2. Lower 
Carboniferous, Carboniferous Limestone : Whitwell, Bolland, Lanca¬ 
shire, England. [E. 8079.] Presented by J. Rofe. A theca. 
-. Lower Carboniferous, Carboniferous Limestone : Bolland, Lan¬ 
cashire, England. [E. 82.] J. Morris Coll. Two crushed thecas. 
-. Lower Carboniferous, Carboniferous Limestone: Lancashire, 
England. [E. 285.] Egerton Coll. One theca. 
——. Lower Carboniferous, Carboniferous Limestone: Calamine mines 
of Duke of Buccleugb, near Whitwell, in Bolland, Lancashire, Eng¬ 
land. [E. 846.] Gilbertson Coll. A very large theca with imperfect 
base, and a smaller, much worn theca. 
-. Lower Carboniferous, Carboniferous Limestone : Whitwell, 
Bolland, Lancashire, England. [E. 808.] Presented by J. Rofe. 
Two thecas. 
Orophocrinus waterhousianus (de Kon. & Le Hon) : R. Etheridge 
fil. & P. H. Carpenter, 1882: v. Orophocrinus pentangularis. 
Orophocrinus whitei. Codaster ivhitei , J. Hall, 1861, Boston Journ. 
Nat. Hist, vii, p. 327. . Codaster? whitei (Hall) : R. Etheridge fil. & 
P. H. Carpenter, 1886, Cat. Blastoidea Brit. Mus. p. 266. Codonites coni - 
cus , nom. nud., S. A. Miller, 1889, N. Amer. Geol. & Palgeont. p. 233. 
Orophocrinus conicus , C. Wachsmuth & E. Springer, 1890, Rep. Geol. 
Surv. Illinois, viii, p. 201, pi. xv, ff. 1—3. Orophocrinus whitei (Hall): 
R. P. Whitfield, 1893, Mem. Amer. Mus. Nat. Hist, i, p. 36, pi. iii, 
ff. 25-28. 
PENTATREMATITES, G. B. Sowerby, 1828, emendatio pro Pen- 
tremites (q. v.). 
Pentatrematites acuta, G. B. Sowerby, 1834: v. Phgenoschisma 
acutum, 
Pentatrematites angulatus, G. B. Sowerby, 1828 : v. Mesoblastus 
angulatus. 
Pentatrematites campanulatus (McCoy) : C. E. Roemer, 1851: 
v. Orbitremites campanulatus. 
Pentatrematites crenulatus, C. F. Roemer, 1851: v. Mesoblastus 
crenulatus. 
Pentatrematites derbiensis (G. B. Sowerby): C. E. Roemer, 1851 : 
v. Orbitremites derbiensis. 
Pentatrematites eifeliensis, C. E. Roemer, 1855: v. Pentremitidea 
eifelensis. 
