WRITINGS OF D. D OWEN AND B F. SHUMARD. 251 



8. 



OWEX, D. D.. and Shumakd, B. F. Descriptions of one New Genus and twenty-two 



New Species ofCriuoidea, from the subcarbouiferous limestone of Iowa. < Rep. 



Geol. Surv. of Wisconsin, Iowa, and Minnesota, and incidentally of a part of 



Nebraska territory, by David Dirie Owen. Appendix. Article II, pp. 587-598, 



pis. Va-Yb. Philadelphia, 1852. 



Page. 

 Plah/crimis, Miller ggj 



P. planus, Owen & Sbumard, 1850, tab. vA, figs. 4 a-c 587 



P. yandellii. Owen & .Shumard, 1850, tab. v A, fig.s. 6 a, 6 587-588 



P. discoideus, Owen & Shumai d, 18.' 0, tab. v A, flirs. 1 a, 6 583 



P. corrugatus, Oweu Sc Sbumard, 1850, tab. v A, figs. 2a-e * 589 



P.burUngtonensis, Owen & Shumard, 1850, tab. v A, fig. 5 ggg 



Dichocrimis, Miin,ster 589-590 



D.ovatus, Owen & Shumard, 1850, tab. v A, figs. 9 a, 6 590 



D.striatus, Owen & Shumard, 1850, tab. v A, figs. 10 a, 6 590 



Cyathocrinus. Miller 59j 



C. iotoensis, Owen & Shumard, 1850, tab. v A, figs. 11 a-c 591 



G.i-ornutus, Owen & Shumard. 1850, tab. vA, figs. 8 a,b 591 



Pentremites, Sav . 



591 



P. norwoodii, Owen & Shumard, 1850, tab. v A, figs. 13 a-c 591-592 



P. melo. Owen & Shumard, 1850, tab. v A, figs. 14 a~c 590 



P. laterni/orinis, Owen &. Shumard. 1850, tab. v A, fig. 15 592-593 



P. stelliformis, Owen 6c Shumard, 1850, tab. v A, figs. 16 a, 6 593 



Actinocrinui, unicormis, Owen & Shumard, 1850, tab. vA,figs.l2a,6 593-594 



Megistocrin ics, n. g., Owen & Shumard, 1852 594 



M.evonsii, n. s.,Owen &. Shumard, 1852, tab. v A. figs. 3 a,b 594 



Platyerinus, Miller 59^ 



P. americanus. Oweu & Shumard, 1852, tab. v B, figs. la,b 594-595 



Poteriocrinus, Miller ggg 



P. rhombifenis, Owen & Shumard, 1852, tab. v B, figs. 2 a-c 595 



P. tumidus, Owen & Shumard. 1852, tab. v B, flg.o. 3 a, 6 595-596 



P.spinoguit, Owen & Shumard, 1852, tab. vB, fig. 4 596 



P. occidentalis, Owen & Shumard, 1852, tab. v B, figs. 5 a, 6 596-597 



Agassizocrinus (Troost in MSS) 59- 



A.conicus, Oweu & Shumard. 1852, tab. v B, flg. 6 597 



Synbathocrinxm dentatw, Owen & Shumard, 1852, tab. v B, figs. 7 a,b 597-598 



Owen, D. D. Shumard, B. F. Summary of the distribution of Orders, Genera, and 

 Species, in the Northwest. <Rep. Geol. Surv. of Wisconsin, Iowa, and Minnesota, 

 and incidentally of a part of Nebraska Territory, by David Dale Owen. Appeu 

 dix. Article III, pp. 598-600. Philadelphia, 1852. 



Modified by additions and researches since the publication in the Proo. of the American As- 

 sociation, 1851. 



