40 THE SPECIES OE BLASTOIDEA 
Pentremites angularis, S. S. Lyon, 1860, Trans. Acad. Sci. St. Louis, 
i, p. 631, pi. xx, ff. 3 a-c. Pentremites angular is, Lyon : R. Etheridge fil. 
& P. H. Carpenter, 1886, Cat. Blastoidea Brit. Mus. p. 156. 
-. Lower Carboniferous, Chester Group: Chester, Illinois, TJ.S.A. 
[E. 8154.] T. A. Worthen Coll. Two thecas, one with peristomial 
covering-plates. 
Pentremites angulatus, “ Gilb.”: J. Phillips, 1836: v. Meso- 
blastus angulatus. 
Pentremites ? astraformis* nom. nud., T. & T. Austin, 1842, Ann. 
Mag. Nat. Hist. (1) x, p. Ill : v. Codaster trilobatus, var. 
acutus. 
Pentremites basilaris, G. Hamhach, 1880, Trans. Acad. Sci. St. Louis, 
iv, p. 159, pi. B, f. 9. Pentremites basilaris , Hambach : 11. Etheridge 
fil. & P. H. Carpenter, 1886, Cat. Blastoidea Brit. Mus. p. 166. 
Pentremites bipyramidalis* J. Hall, 1858: v. Metablastus bi- 
pyramidalis, 
Pentremites bradleyi, E. B. Meek, 1873, 6th Ann. Rep. Geol. Surv. 
Territories, for 1872, p. 470, and footnote. 
Pentremites broadheadi, G. Hambach, 1880, Trans. Acad. Sci. 
St. Louis, iv, p. 159, pi. B, f. 6. 
Pentremites burlingtonensis, E. B. Meek & A. H. Worthen, 1870, 
Proc. Acad. Nat. Sci. Philadelphia, 1870, p. 33; and 1873, Rep. Geol. 
Surv. Illinois, v, p. 461, pi. viii, f. 7. Pentremites burlingtonensis , Meek 
& Worthen : R. Etheridge fil. & P. H. Carpenter, 1886, Cat. Blastoidea 
Brit. Mus. p. 156. 
Pentremites godoni (Defrance) : R. Etheridge fil. & P. H. Carpenter, 
1886, Cat. Blastoidea Brit. Mus. pp. 103, 157, pL i, f. 11. Lower 
Carboniferous, Upper Burlington Limestone: Burlington, Iowa, 
U.S.A. [E. 762.] C. Wachsmuth Coll. A theca identified as 
P. burlingtonensis by C. Wachsmuth, who held the type-specimen. 
It was registered and labelled as P. burlingtonensis by one of the 
authors of the “ Catalogue.” It comes from the horizon of P. burling¬ 
tonensis , a horizon from which P. godoni has not yet been recorded. 
And it agrees with the diagnosis of P. burlingtonensis. 
-. Lower Carboniferous, Upper Burlington Limestone : Burlington, 
Iowa, U.S.A. [E. 763.] C. Wachsmuth Coll. A theca which, 
though purchased in August 1874, was not catalogued by R. 
Etheridge fil. & P. H. Carpenter, 1886. 
Pentremites ? ealyee. Pentremites calyce , J. Hall, 1862, 15th Rep. 
State Cab. Nat. Hist. N. Y. p. 150. “ Genus indet.,” R. Etheridge fil. 
& P. H. Carpenter, 1886, Cat. Blastoidea Brit. Mus. p. 138. 
