WITH LIST OF SPECIMENS. 
31 
Grove, Iowa, U.S.A. [E. 810.] C. Wachsmuth Coll. Thirty-three 
thecas and fragments, one specimen with four thecas on matrix. 
-. Lower Carboniferous, Upper Burlington Limestone : Burlington, 
Iowa, U.S.A. 
[E. 811.] C. Wachsmuth Coll. Four internal casts in chert, and 
eleven thecas showing cross-sections of hydrospires. 
fE. 812.] L. Saemann Coll. Ten whole and five parts of thecas. 
[E. 8181.] T. A. Worthen Coll, ex G. T. Nealley Coll. Two 
thecas. 
--. Lower Carboniferous, Upper Burlington Limestone : Louisiana, 
Missouri, U.S.A. [E. 8003.] B. B. Bowley Coll. Two internal 
casts in chert. 
-. Lower Carboniferous, Upper Burlington Limestone (chert): 
Loc. unknown ; ? Burlington, Iowa, U.S.A. 
[E. 8182.] T. A. Worthen Coll, ex G. T. Nealley Coll. An 
internal cast. 
[E. 8183.] T. A. Worthen Coll, ex Brewster Coll. A large 
internal cast. 
Orbitremites norwoodi, var. fimbriatug. Grancitocrinus jimbriatus , 
E. B. Meek & A. H. Worthen, 1866, Proc. Acad. Nat. Sci. Philadelphia, 
1866, p. 259. “ Only a well-marked variety of Granatocrinus norwoodi.” 
B. Etheridge fil. & P. H. Carpenter, 1886, Cat. Blastoidea Brit. Mus. 
p. 248. 
Orbitremites oblongus (“ Gilb.”), T. & T. Austin, 1842 : v. Meso- 
blastus elongatus* 
Orbitremites orbicularis. Pentatrematites orbicularis , G. B. Sowerby, 
1834, Zool. Journ. v, p. 456, Suppl.-pl. xxxiii, f. 5. Pentremites orbicu¬ 
laris , “ Gilb.”: J. Phillips, 1836, Geol. Yorksh. ii, p. 207, pi. iii, f. 9. 
Granatocrinus orbicularis (Sow.) : B. Etheridge fil. & P. H. Carpenter, 
1882, Ann. Mag. Nat. Hist. (5) ix, p. 239 ; and 1886, Cat. Blastoidea 
Brit. Mus. p. 248. 
Pentatrematites orbicularis , G. B. Sowerby, 1834, Zool. Journ. v, p. 456, 
Suppl.-pl. xxxiii, f. 5, left-hand. C. Pentremites orbicularis, “ Gfib.” : 
J. Phillips, 1836, Geol. Yorksh. ii, p. 207, ph iii, f. 9. Granatocrinus 
orbicularis (Sow.): B. Etheridge fil. & P. H. Carpenter, 1886, Cat. 
Blastoidea Brit. Mus. p. 249, pi. ix, ff. 11, 13, 16. Orbitremites 
orbicularis (Sow.) : E. A. Bather, 1899, in E. Bay Lankester’s 
Zoology, Cap. Blastoidea, f. xv, 3, 4. Lower Carboniferous, Car¬ 
boniferous Limestone : Calamine mines of the Duke of Buccleugh, 
near Whitwell in Bolland, Lancashire, England. [E. 8135.] Gil¬ 
bertson Coll., No. 78. A theca ; one of two type-specimens. 
Pentatrematites orbicularis , G. B. Sow r erby, 1834, Zool. Journ. v, p. 456, 
Suppl.-pl. xxxiii, f. 5, right-hand. C. Lower Carboniferous, Carbo¬ 
niferous Limestone: Calamine mines, Bolland, Lancashire, England. 
[E. 8136.] Gilbertson Coll., No. 78. A theca, one of two type- 
specimens. 
