40 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



42. 



Mkek, F. B., and Worthen, A. H. Contributions to the Paleontology of Illinois and 

 other Western States. <Proc. Acad. Nat. Sci. Phila., vol. xviii, pp. 1251-275,1866. 

 Philadeljihia, 186G. 



Carboniferous fossils. Al'trrwiinl rcpublishotl and illustrated in fbe Illinois Geological Re 

 ports. 



Radiata. 

 Echinodcnnata. 

 Crinoidea. Page. 



lielemiwcrinun whitii, n. s., M. &. "W., 1866 251 



Subgenus Xeniatocrhius, M. & W. 1806 S.ll 



Synbathocrinitg wachsm uthi, u. 8.,M. cfcAV., 1866 251-252 



Oyathocrinux farleyi , n. s., M. A: W., 1866 252-253 



Actinocrinns calycxdus var. pardineiisis, M. & W 253 



Strotocrinus, n. g., M. & W., 1866 253 



SUganocrinus, u. j;., M. &. W., 1866 253-254 



Rhodocrinus nanus, n. 8.,M. &, W., 1866 254 



Onychocrimis, Lyon (tCasseday 255-256 



Onychocrinus divergus, h. s., M. S^'W., 1866 256-257 



Oranatocrinuii shumardi, n. .s., M. &W., 1866 257-258 



Granaiocrinus norwoodi, O. &S.? 258-259 



Asteroidea. 



Schcenaster wachsmuthi, n. a., M. iW., 1866 259 



Molliuca. 

 Lamellibranchiaia. 



Pteria (Pterlnea'i) morganensis, n. s., M. & W., 1866 259-260 



Dolabra sUrlingmsis, n. s.,M. &"W".,1806 260-261 



Macrodonmicro7ieina, n. a., M. &W., 1866 261 



Gasteropoda. 



Plalycems, Conrad, 1840 262-263 



Subgenus Orthonychia, IJall 263 



Subgenus Igoceras, Hall 263 



P. Imvigatum, n. a., M. &.W., 1866 263-264 



P. haliotoides, n. s., M. & "W., 1866 264 



P. uncum, n. a.,M. &W.,1866 264-265 



P. {Orthonychia) chesterense, n. a., M. &i W. 1866 265 



P. {Orthonychia) siibpUcatum, U.S., M. &.W., 1866 265-266 



P. {Orthonychia) infundibulum, n. a.,M. & W., 1866 266 



Metoptoma, I'liillips, 183G 266-267 



Metoptoma (Platyceras i) umhella, n.a., M. <fc W., 1866 267 



Polyphemopsis chrysallis, n. a., M. &. W., 1806 267-268 



Naticopsis littonana var. genevievensis, M. iScW 268 



Anomphalus,n.g.,M.&.W.,1866 268 



A.rotulus, n.8.,M. &W.,1866 26*-269 



Microdoma, n. g., M. & W., 1866 269 



M.conica, n.s., M. & W.,1866 269-270 



Orlhonema conica, n. a., M. & "W., 1866 270 



Trochita? carfco?iaria, n. .s., M. &W., 1866 270-271 



Platyschisma pclicoidcs, Soworby ? sp 271 



PJeuro(o?HariacoJioirfc«, U.S., M.&"W.,18C6 271-272 



PUurotomaria coxana, n. a., M. &. W., 1860 272 



Pleurotomaria spironema, n. a.,M. & W., 1866 272-273 



Pleurotomaria valvatiformis, n. a., M. &.W., 1866 273 



Murchisonia inornata,-n. a., M. &. W., 1866 274 



Cephalopoda. 



Nautilus ( Trcm a<odi*c««) euZcati/s, Sowerby? 274 



Nautilus (Gryptoeeras) rockfordensis, u. a., M. & W., 1866 275 



In a note tlio autbora consider tbeir previously proposed Evactinopora as equivalent to Cono- 

 dictyum JVIiinstor, and call tbeir species C. rixdiatum. 



