68 
THE SPECIES OF BLASTOIDEA 
Triccelocrinus sp. Lower Carboniferous (probably St. Louis Group): 
Canton, Indiana, U.S.A. [E. 8187.] T. A. Worthen Coll. A rather 
weathered theca in chert. Probably the same as Tricoelocrinus obli- 
quatus , Meek & Worthen, non Boemer. 
TROOSTOCRXNUS. Troosticrinus, . B. E. Shumard, 1866, Trans. 
Acad. Sei. St. Louis, ii. p. 384, footnote. Troostocrinus, Shumard: 
F. B. Meek & A. H. Worthen, 1869, Proc. Acad. Nat. Sci. Philadelphia 
for 1868, p. 356 ; and 1873, Bep. Geol. Surv. Illinois, v. p. 507 (as 
subgenus of Pentremites ). Troostocrinus, Shumard : It. Etheridge fil. & 
P. H. Carpenter, 1882, Ann. Mag. Nat. Hist. (5) ix, p. 247; and 1886, 
Cat. Blastoidea Brit. Mus. p. 191. Type-species— T. reinwardti. 
Troostocrinus bipyramidalis (J. Hall) : Shumard, 1866 : v. 
Metablastus bipyramidalis. 
Troostocrinus ? clavatus (G. Hambach): B. Etheridge fil. & P. H. 
Carpenter, 1882 : v. Pentremites clavatus. 
Troostocrinus cottaldi (Munier-Chalmas) : B. Etheridge fil. & P. H. 
Carpenter, 1883 : v. Metablastus cottaldi. 
Troostocrinus ? grosvenori. Pentremites grosvenovi , B. E. Shumard, 
1858,Trans. Acad. Sci. St.Louis, i, p. 240, pi. ix, ff. 2a-d. Troosticrinus ? 
grosvenori , B. E. Shumard, 1866, Trans. Acad. Sci. St. Louis, ii, p. 384, 
footnote. Troostocrinus ? grosvenori , Shumard : B. Etheridge fil. & 
P. H. Carpenter, 1882, Ann. Mag. Nat. Hist. (5) ix, p. 249 ; and 
1886, Cat. Blastoidea Brit. Mus. p. 194. 
Troostocrinus hispanicus, B. Etheridge fil. & P. H. Carpenter, 1883 : 
v. Metablastus hispanicus. 
Troostocrinus laterniformis (Owen & Shumard): B. E. Shumard, 
1866 : v. Triccelocrinus laterniformis. 
Troostocrinus lineatus (Shumard): B. F. Shumard, 1866: v. Meta¬ 
blastus lineatus. 
Troostocrinus nitidulus, S. A. Miller & W. F. E. Gurley, 1890, 
Descr. new gen. and sp. Echinodermata, p. 58, Danville, Ill.; and 
1891, Bep. Geol. Surv. Indiana, xvi, for 1888, p. 373; and pi. ix, ff. 14,15, 
pi. x, f. 14, of both publications. 
Troostocrinus reinwardti. Pentremites reinwardtii, G. Troost, 1835, 
Trans. Geol. Soc. Pennsylvania, i, p. 224, pi. x, ff. 10,11. Pentatrema- 
tites reinwardtii , Troost: C. F. Boemer, 1851, Arch. Naturges. xvii (i), 
p. 372, pi. vi, ff. 12 a-c. Troosticrinus reinwardtii (Troost): B. F. 
Shumard, 1866, Trans. Acad. Sci. St. Louis, ii, p. 384, footnote 
Troostocrinus reinwardtii (Troost) : B. Etheridge fil. & P. H. Carpenter, 
1882, Ann. Mag. Nat. Hist. (5) ix, p. 249. Troostocrinus reinwardti 
