60 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM 



Page. 



Cyathocrinus, MiUeT,182\ 481 



C. enormw, M. & W., 18C5, pi. xvi, figs. 3 a, 6 481-482 



O. waclismuthi, M. & W., 1861, p. 482, fig. — , and pi. xvi, fig. 5 482-484 



Poteriocrinus, Miller, 1821 484 



P. temHbrachiatus,M. &. W., 1861, p. 484, fig.— , and pi. xvi, fig. 1 484^85 



P. suhimpressus, M. & W., 1801, p. 485, fig. — , aud pi. xviii, figs. la,h 485-486 



P. carinatus, M. &:. W., 18G1, p. 486, fig. — , and pi. xvii, fig. 1 486-488 



Subgeuus Heaphiocnnus, Hall, 1858 488 



S. tvachsmuthi, SI. & AY., 1861, p. 488, fig. — , and pi. xvi, figs. 7 «, 6 488-489 



Poteriocrinus {Scaphiocrinus) tenuidactylus, M. ScW., 1865, p. 490, fig. — , and pi. 



xviii, flg.lO 490-491 



Oyiyc/iocrimis, Lyon & Casseday, 1859 492 



O. diversus, M. & W. , 1866, page 492, fig. —, and pi. xvii, figs. 5 a, 6 492-495 



Taxocrinus, Phillips, 1843 495 



Forbesincrinus, de Kou. &, Le Hon, 1854 495 



P. agassizi. \nr. f/iganteus, M. & W., 1861, pi. xviii, fig. 3 495 



Oranatocrimis (Troost), Hall, 1852 496 



G. projectug, M. &. W., sp., 1861, page 496, fig. — , and pi. xviii, fig. 7 496 



G. norwoodi, O.icS.'! sp., 1860, pi. xviii, fig. 8 496-497 



G. shumardi, M. & W., 1866, page 498, fig.—, and pi. xviii, figs. 6 a, ? b 498-499 



Asteroidca 499 



Schcenagter, M. & "W., 1860 499 



S. wachHmutld, M. & W., 1866, pi. xvii, fig. 4 499-500 



MolluBca 601 



Polyzoa 501 



Evactinopora, M. & W., 1865 501 



E. radiata, M. & \V., 1865, page 502, fig.—, and pi. xvii, figs. 2 a, 6 502 



E. sexradiata, n. s., M. & W , 1808, pi. xvii, fig. 3 502 



E. grandis, n. s., M. <fc W., 1868, p. 503, fig. — , and pi. xv, figs. 2 a, & 503 



Fenestella, Lonsdale, 1839 504 



Subgenus iyrojjora, Hall, 1856 504 



Fenestella (Lyropora) rctrorga, n. s., M. & W., 1868, pi. xv, fig. 1 504 



Brachiopoda 505 



Chonetes, Fischer, 1837 505 



C. illinoisensis, Worthea, 1860, pi. xv, figs. 8 a, h 505-506 



Gasteropoda 506 



Metoptoma. Phillips, 1836 506 



M.? timbella, M. & W., 1866, pi. xv, figs. 6 a, 6, c; and 7 506-507 



Platyceras, Conrad, 1840 508 



P. I?] revi'rsum, Hall, 1860, p. 8b8, fig.—, and pL xv, figs. 4 a, 6 508-509 



P. biserialis, Hall, 1 860, pi. x v, figs. 3 a, 6 509 



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



FOSSILS OF THE KEOKUK GUOUP. 



Padiata 511 



Echinodermata 511 



Pte?j/cmi«s, Miller, 1821 511 



P. heiiiisphcericus, M. & W., 1805, p. 511, tig. — , and pi. xx, figs. 2 a,b 511-513 



P. niotensis, M. &. W., 1865, -p. 513, fig.—, and pi. xx, fig. 3 51.3-514 



Poteriocrinus, Miller, 1821 515 



P.indianensii!, M. <t W., 186.j, pi. xx, fig. 4; and p. 515, fig. — 515-516 



Cyathocrinus, Miller, 1821 517 



C'./arto/t, M. & W., 18CG, p. 517, fig.- , and pi. xx, fig.s. 1 a, b, and 6 c 517-518 



C. 1 sp. iindt., pi. XX, figs. 5 a-c 518-510 



C. quinquelubus, M. &, \V., 1865, p. 519, fig. — ; and pi. xx, figs. 6 a, & (not c) 519-520 



C. arboreus, M. & \V., 1865, p. 520, fig.— 520-522 



Echinoidea 522 



Perischoechinidce 522 



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



L. eoreyi, n. s., M. & W., 1868, p. .')24, fig. A 524-525 



Melonites multipora, p 524, fig. B 524 



Oligoporus dance, p. 524, fig. C 524 



* Aeiri;, a scale; ea-Btji, a garment. 



