60 BULLETIN NO. 30, UNITKD STATES NATIONAL MUSEUM 



Page. 



C!/a«/.omni/«, Miller, 1821 481 



C. cnorinw, M. A; W., 18C5, pi. xvi, figs. 3 a, 6 481-482 



C. uachtmtithi, il. &, W., I(r61, \>. 482, flg. — , and pi. xvi, fig. 5 483-484 



Potfriocrinut, M ilk-r, 1821 ! 484 



P. Unuibrachiatug, M. & W., 1861, p. 484, fig.— , nnil pi. xvi, fig. 1 484-485 



P. Kubimprentiig, M. & \V., 18G1, p. 48."), fig. — , and pi. xviii, figs. 1 a,b 485-486 



P. carinaliis, M. <Sc W., 1861, p. 480, fig. — , and pi. xvii, fig. 1 486-488 



Siibgeuu.s Scaphiucrinun, Hall, 1858 488 



S. ^cach^muthi, M. & AV., J 801, p. 488, fig.— , and pi. xvi, figs. 7 a, 6 488-4fc9 



Poteriocrinus {Scaphiocrinus) tenuidactylug, M. &'W., 1865, p. 490, fig. — , and pi. 



xviii, fig.lO 49<M91 



Ont/c/iocninit*, Lyon (fc Ca.'i.seday, 1859 492 



O. divermg, M. & AV., 18G0, page 492, fig.—, and pi. xvii, figs. 5 a, b 492-495 



Taxocrinxii, Phillips, 1843 495r 



Forbegiocrinus, de Kon. &. Le Hon, 1854 495 



F. (u/assizi. var. giganteus, M. & \V. , 1861, pi. xviii, flg. 3 495 



Granatocrintis (Troost), Hall, 1852 496 



G. projectus, M. 4: W., sp., 1861, page 490, fig.—, and pi. xviii, flg.7 496 



G. norwoodi. O. <t S. ? sp., 1860, pi. xviii, flg. 8 496-497 



G. ghwnardi, M. & W,, 1860, page 498, flg. — , and pi. xviii, figs. 6 a, ? b 498-499 



Asteroidca 499 



SchcenagUr, M. & W., 1860 499 



A\ icachsmuthi, M. & W., 1866, pi. xvii, fig. 4 499-500 



MoUusca 601 



Polyzoa , 501 



Evactinopora, M. & W., 1865 501 



E. radiata, M. & W., 1865, page 502, fig.—, and pi. xvii, figs. 2 a, b 502 



E. gexradiata, n. s.,M. ct W., 1808, pi. xvii, fig. 3 502 



E. grandig, n. s.,M. &. W., 1868, p. 503, fig.—, and pi. xv, figs. 2 a, b 503 



Fenegtella, Lonsdale, 1839 504 



Subgenus ii/ropora. Hall. 1850 504 



Fenegtella (Lyropora) rctrorsa, n. s., M. &, W., 1808, pi. x v, fig. 1 504 



Brachiopoda ' 505 



Chonetes, Fischer, 1837 505 



C. illinoUengig, AVoithen, 1860, pi. xv, figs. 8 o, 6 505-506 



Gagteropoda 506 



Metoptoma. Phillips, 1836 506 



MJ umhella, M. & "W., 1806, pi. xv. figs. 6 a, 6, c; and 7 506-507 



Pta<ycera«. Conrad, 1840 508 



P. [ /J rev^rxum. Hall, 1800, p. 508, fig. — , and pi. xv. figs, i a,b 508-509 



P. bUerialig. Hall, 1860, pi. xv, figs. 3 a, 6 509 



P. ( Orthonychia) quincyense, McChesney, 1861, pi. xv, figs. 5 a, b 510 



FOSSILS OF THE KEOKUK GUOUP. 



Eadiala 511 



Eckinodermata 511 



Pta7i/cmi««, Miller, 1821 511 



P. heminphivricwg, M. i W., 1865, p. 511, fig.- ,andpl. xx, figs. 2 a, i* 511-513 



P. niotengig, M. &, W., 1865, p. 513, fig.—, and pi. xx, fig. 3 513-514 



Po^^r^ocrmu«, Miller, 1621 615 



P. indianemis, M. &. W.. 180.5, pi. xx, fig. 4 ; and p. 515, fig. — 515-516 



Cyathocrinus. Miller, 1821 517 



C./arleyi, M. & W., 1800, p. 517, fig.—, and pi. xx, flg8.1o,6, and 6 c 517-518 



C.f sp. undt., pi. XX, figs. 5 a-c 518-510 



O. quhifjuelobug, M. & W., 1805, p. 519, fig. — ; and pi. xx, figs. 6 o, 6 (not c) 519-520 



C. arboreus, M. <k \V., 180J, p. 520, fig.- 520-522 



Eckinoidea 522 



Perischoechinidie 522 



Lepidcgtheg,* n. g., M. & W., 1868 522-524 



L. coreyi, n. s., M. & W., 1868, p. 524, fig. A 524-525 



Melonilcg multipora, p 524, fig. B 524 



Oligoporus dana, p. 524, flg. C 524 



* Aeirif , a scale; i<T9ifi, a garment. 



