84 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Page. 

 MoUusca. 



Gasteropoda. 



Platiiceras. Conrad. 516 



r. uncuin, M. .t W., 1806, pi. xvii, fig. t 516-517 



P. injunflibulum, M. & W., 1866, pi. xvii, fig. 3 517-518 



r. efjuilatern, Hall, 18G0. pi. xvii, fig. 2 518-.'>19 



P./issvrdla, IJall, 1859, pi. xvii, fig. 4 610-520 



Pteropoda. 



Oonnlaria. 



Conttlaria subcarbonaria, M. &. "W., 1865, pi. xix. fig. 4 520-522 



Cephalopoda. 



Nautilus, Linn 522 



X. (Diicites) disriformiti, M. ScW., 186.5, pi. xviii, flg. 1 522-523 



X. (Temnochcilus) nintcnuig, M. &.W., 1865, pi. xix, flg. 3 523-524 



K. (Solcnochcilus) leidyi, M. &, W., 1865, pi. xviii, flg. 2 524-525 



Articiilata. 



Phillipgia, Portlock 525 



P. i Clrijffithidcs) portlnckii, M. &. "W. , 1865, pi. xix, fig. 6 -. 525-528 



P. (Griffithides) btifo, U. &W., 1870, pi. xv, fig. 10 528-529 



FOSSILS OF THE 8A1MT LOUIS GROUP. 



£chinodcrmata. 



Barycrinus 530 



B. tpectabilu, M. & W., 1869, pi. xx, fig. 8 530-533 



Poteriocrinites 533 



P. hardinensis, Worthon MSS., pi. xx, fig. 10 533 



Subgenus Scaphiocrinvs 534 



P. (Scaphiocrinus) kiintsvillce, 'Worthen MSS., pi. xx, flg. 1 534 



Subgenus Zeacrinus 534 



P. (Zeacrinus) arboreus, "Worthon MSS., pi. xx. fig. 5 534-535 



P. {Zeacrinus) cariniferous, Worthru MSS., pi. xx, fig. 4 535-536 



P. (Zeacrinus) coinpactilin, Worthen MSS., pi. xxi, fig. 5 536-.537 



Dichocrimis, Munster 537 



D. cornigerux, Shumard ? 1860, pl.xx, fig. 6 .♦. 537 



Granatocrinus 537 



G.glaber, M. & "W., 1869, pL xx, fig. 11 537-539 



MoUusca. 

 LamMibranchiata. 



Lithophaga ? pertenui^, M. & "W., 18C5, pL xxii, fig. 1 539-,540 



Myalina 540 



M. St. ludorici, Woi-thpn MSS., pi. xxii, fig. 3 540 



Chcenomi/a,Jii.Sc.W 540 



C. f rhomboidea, M. & "W., 186.5, pi. xxii, flg. 4 540-511 



Pteropoda. 



Conularia 541 



C. misgnurientig. Swallow ? 1860, pi. xxii, fig. 5 541-542 



Cephalopoda. 



Nautilus 543 



N. (Temnochexlus) coxanus, M. & "W., 1860. pi. xxiii, fig. 1 543-544 



N. (Solenocheilus) coUectus, M. &. W., 1870, pi. xxiii, figs. 3 and 4 544-545 



FOSSILS OF THE CHESTER GROUP. 



Echinodermatxi. 



Poteriocrinites 546 



P.bisselli, "Worthen MSS., pi. xxi, fig. 4 546-547 



Subgenus Zeacrinvji 547 



P. (Zearrinus?) armiger.U. & "W., 1870, pi. xxi, flg. 3 547-548 



P. (Zeacrinus) stibium idtis, Worthen MSS., pi. xxi, fig. 1 548-549 



P. (Zeacrinus) forrnoxtiK, Worthen MSS., pi. xxi, fig. 2 549 



SubgenJis Scaphiocrinus 550 



P. (Scaphiocrinus) bayenttis, M. & W., 1865, pi. xx, fig. 2 550-551 



P. (Scaphiocrinus) randolphensis, Worthen MSS., pL xxi, flg. 14 551-552 



Onychocrinui 552 



O.w/iiV/eWi, HaUHp.,1858,pLxx,flg.3 552-554 



Eupaehycrinus - 554 



