WITH LIST OF SPECIMEN’S. 
55 
-. Lower Carboniferous, Chester Group: Evansville, Illinois, 
U.S.A. [E. 8161.] T. A. Worthen Coll. Three rather rolled 
thecas. 
-. Lower Carboniferous, St. Louis Limestone : Hardin Co. 1 , 
Illinois, U.S.A. 
[E. 8162.] T. A. Worthen Coll. Eive nearly perfect thecas. 
[E. 8163.] T. A. Worthen Coll. A theca with brachioles on 
matrix. 
[E. 8164.] T. A. Worthen Coll. Eive well-preserved thecas, 
labelled “ Pentremites koninckana.” 
Pentremites trimeatus. Pentremites truncata, T. A. Conrad, 1844, 
Proc. Acad. Hat. Sci. Philadelphia, 1843, (1) i, p. 334. 
Pentremites varsouviensis, A. H. Worthen, 1875 : v. Meta- 
blastus varsouviensis. 
Pentremites verneuili, G. Troost, 1841: v. Nucleocrinus ver- 
neuili. 
Pentremites waterhousei, J. Rofe, 1865: v. Orophocrinus pent- 
angularis. 
Pentremites waterhousianus, L. G. de Koninck & H. Le Hon, 1854 : 
v. Orophocrinus pentangularis. 
Pentremites ? white!. Pentremites whitei , I. Hall, 1862, 15th Rep. 
State Cab. Hat. Hist. H.Y. p. 150. “Genus indet.,” R. Etheridge fil. 
& P. H. Carpenter, 1886, Cat. Rlastoidea Brit. Mus. p. 138. See also 
under Pentremitidea xiiosa. 
Pentremites woodmani, E. B. Meek & A. H. Worthen, 1868 : v. Tri- 
ccelocrinus woodmani. 
Pentremites worthen!, J. Hall, 1858 : v. Metahlastus wortheni. 
Pentremites sp., R. Etheridge fil. (pars), 1881: v. Phsenoschisma 
benniei. 
Pentremites sp., G. E. Whidborne, 1881: v. Triccelocrinus ? leei, 
et Pentremitidea ? whidbornei. 
PENTREMITIDEA, A. L>. d'Orbigny, 1849, Prodr. Pal. Strat. i, 
p. 102. Pentremitidcea , A. D. d’Orbigny, 1852, Cours elem. Pal. Geol. 
ii, p. 139. Pentremitidea, R. Etheridge fil. & P. H. Carpenter, 1882, 
Ann. Mag. Hat. Hist. (5) ix, p. 220 ; and 1886, Cat. Blastoidea Brit. 
Mus. p. 169. Type-species— P. paillettei. 
1 This is the type-locality ; but Hall quotes the species from “ Kaskaskia Limestone ” 
[ = Chester Group]. 
