136 ECHINODERMS. 



Pentremites pyriformis Wachsmuth <fc Springer, 1879: Proc. Acad. Nat. 



Sci., Phila., pi. xvii, fig. 5. 

 Pentremites pyriformis Ethridge & Carpenter, 1886: Cat. Blastoidea, p. 



167, pi. ii, figs. 24-30. 



Calyx pyriform, otherwise closely approaching P. godoni. 



Horizon and localities.— luOweT Carboniferous, Kaskaskia 



limestone: Ste. Mary (Ste. Genevieve county). 



Pentremites godoni Defrance. 



Encrina godoni Defrance, 1819: Diet. Sci. Nat., t. XIV, p. 467. 

 Encrinites florealis von Schlotheim, 1820: Petref, Bd. II, p. 38. 

 Pentremite Saj, 1820 : Am. Jour. Sci., vol. II, p. 38. 

 Pentremites florealis Say, 1825: Jour. A.cad. Nat. Sci., Phila., vol. IV, p. 



295. 

 Pentreyniies florealis Owen & Shumard, 1852: U. S. Geol. Sur. Wisconsin, 



Iowa and Minnesota, p. 592. 

 Pentremites godoni Hall, 1858: Greol. Iowa, vol. I, p. 692, pi. xxv, figs. 13a-b. 

 Pentremites godoni White, 1881: Geol. Sur. Indiana, 10th Ann. Rep., p. 



511, pi. vii, figs. 10-11. 

 Pentremites godoni Ethridge & Carpenter, 1886 : Cat. Blastoidea, p. 157, 



pi. ii, figs. 1-13. 



Calyx globose, otherwise much like P. elongatus. 

 Horizon and localities. — Lower Carboniferous, Kaskaskia 

 limestone: Ste. Mary (Ste. Genevieve county). 



Metablastuslineatus (Shumard). 



Plate xviii, fig. 11. 



Pentremites lineatus Shumard, 1858: Trans. St. Louis Acad. Sci., vol. I, 



p. 241, pi. ix, figs. 3a-2. 

 Pentremites lineatus White, 1863 : Boston Jour. Nat. Hist., vol. Ill, p. 488. 

 Troostocrinus lineatus Shumard, 1865: Trans. St. Louis Acad. Sci., vol. II, 



p. 384. 

 Troostoa-inus lineatus Ethridge & Carpenter, 1882: Ann and Mag. Nat. 



Hist , vol, IX, p. 249. 

 Metablastus liiieatus 'EAth.r\6.ge & Carpenter, 1886: Cat. Blastoidea, p. 199, 



vol. Ill, figs. 14-15. 



Calyx very long, spindle-shaped, summit contracted ; base 

 sub-pentagonal above, triangular below ; periphery two- thirds 

 the entire distance from the bottom. Basals very long, slen- 

 der, somewhat rounded above, angular below. Eadials elon- 

 gated, narrow ; bodies arched and rather angular medially, 

 sides flattened; sinus quite narrow, deeply cleft. Surface or- 

 namented by fine lines. 



Horizon and localities. — Lower Carboniferous, Upper 

 Burlington limestone : Hannibal. 



