148 BULLLTIN >.0. 30, UNITED STATER NATIONAL ?iltJgEtJ»f. 



Same. In ludiaiwi Ceol(>j;ic:il Kci)ort, 18T!>-'80. From the. St^cond Annual Report of 

 the Bureau of Statistics and Geolojiv. John CoHett, Chief of Department. In- 

 dianapolis, 1881. 8vo. pp. 10:5-154, and 11 plates. 



This book is an extract of the geoloj^ical and biological matter from tlie vohimo of the pro- 

 cediiij; entry, repagod and bound in cloth, with new titl('-j)age as above. 



This work is tlesigned for populai' use, and, with the exeei)tion of one variety, none of tlie 

 species described and figured are new. The illustrations are also largely copies of formerly 

 published tigiues. Foityiiine species of characteristic Silurian, Devonian, and Carboniferous 

 fonns are given. 



LOWEK SII.IJIilAN. 



MoUusca. Page. 



Bracliiopoda. 



Strophomena, Raflnesque 481 



S. rtiternata, Conrad, pi. i, figs. 6 and 7 481-482 



S. planumbona, Hall, pi. ii, figs. 13 and 14 48.3-484 



Orthis, Daliuau 484 



O. mbquadrata, Hall, pi. i, figs. 3-5 484-485 



O. occidentalis, Hall, pi. ii, figs. 10-12 485^87 



O. bi/orata, Schlotheini var. acutilirafa, Conrad, pi. ii, flgs. 5-9 487^89 



Rhynchonella, Fischer 489 



R. capax, Conrad, pi. i, flgs. 9-11 489-490 



It. dentata, Hall, pi. i, flgs. 12-14 490-491 



LamellibrancJdata. 



Megaptera, M. & W 491 



Ambonychia (Megaptera) casei, M. & W., pi. i, flgs. 1 and 2 491-492 



Gasteropoda. 



Cyclonema, Hall 492 



O. bilix, Conrad, pi. ii, flgs. 3 and 4 492-493 



Cnietacea. 

 Trilobites. 



Calymene, Brongniart 493 



O. senaria, Coni'ad, pi. ii, flgs. 1 and 2 493-495 



ITPPER SILURIAN. 



Echinodermata. 



Eucalyptocrinus, Goldfuss „ 495 



E. cransm; Hall, pi. iii, fig. 1 495-496 



Jirachiopoda. 



Rhynchonella, Fischer 496 



R. tennesseensis, Roemer, pi. iii, figs. 2-4 496^97 



Spiri/er, Sowerby 407 



<S. radiata, Soworby, pi. iii, figs. 5 and C 497 



Gasteropoda. 



Platyostoma, Conrad 497 



P. niajarense, HaU, pi. iii, flgs. 7 and 8 497-498 



Criigtacea. 

 Trilobites. 



Cyphaspis, Bui meister 498 



C. c/im(2/i, Hall, pi. iii, fig. 9 498-499 



DEVONIAN. 



Polypi. 



Zaphrentis, Raflnesque & Clift'ord 499 



Zaph rentis ? White, 1 880, i)l. v, figs. 3 and 4 499 



Favosites, Lamarck 499 



Favointes ? White, 1880, i)l. v, figs. 1 and 2 499 



Brachio2ioda. 



Slrophodonfa, Hall 500 



S. demlssa, ( 'onrad, pi. iv, flg.s. 6 and 7 500-501 



Orthi^i, Dalmau 501 



O. iowensis. Hall (.'), pi. v, figs. 10-12 501-502 



Atrypa, Dalraan ,')02 



A. reticularis, Linna-us, pi. v, figs. 7-9 502 



Athyris, 'McCoy 502 



A. vittata, Hall, pl.iv,figs.8 and 9 502-503 



Spiri/er, Sowerby _ 503 



