148 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Same. In ludiaiia Geolo^^ical Koporr, 18Tl)-'80. From the Second Aiiunal Report of 

 the Bunau of Stali.stics and Geidogy. John CoUott, Chief of Di;partment. In- 

 dianapolis, 1881. 8vo. pp. lOIl-lol. and 11 plates. 



This book i» an extract of the gcolot;ical and liio]ogical matter from tlic volume of the i)re- 

 ccdiDg cutiy, lepaged auil bound in clotb, with new title-page as above. 



This work is de.signed for )>opular use, and, with the exception of one variety, none of the 

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

 published figures. l''orty-nine species of characteristic Silurian, Devonian, and Carboniferous 

 forms are given. 



LOWER SILURIAN. 



Mollusca. Page. 



Brachiopoda. 



Strophomena, Kalinesqne 481 



S. alter iiata. Cum ad, pi. i, tigs. 6 and 7 481-482 



S. ijlamimbona, Hall, pi. ii, tigs. 13 and 14 483-484 



Orthis, Dalman 484 



O. *-u6^H(jdra<a, Hall, pi. i, figs. 3-5 484-485 



O." occidentalis, Hall, pi. ii, flgs. 10-12 485-487 



O. bi/orata, Schlotheini var. acutilirata, Conrad, pL ii, flgs. 5-9 487-489 



Rhynchunella, Fischer 489 



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



if. denmia, Hall, pi. i, flgs. 12-14 490-491 



Lainellihranchiata. 



Megaptera, M. & W : 491 



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



Gasteropoda. 



Cyclonema, Hall 492 



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



Crustacea. 

 Trilobites. 



Calymenc, Brongniart 493 



(7. «««««'«, Conrad, pi. ii, flgs. 1 and 2 493-495 



LTPER SILURIAN. 



Eehinodermata. 



Eiccalyptocrinus, Goldfuss .«• 495 



E. crassiis, Hall, pi. iii, fig. 1 495-496 



Brachiopoda. 



Jihynchoiiella, Fischer 496 



Jl. <cnne««een.«t«, Roemer, pi. iii, flgs. 2-4 496-497 



Spirifer, Sowerby 407 



S. radiatu, Sowerby, pi. iii, figs. 5 and 6 497 



Gasteropoda. 



Platyostoma, Conrad 497 



P. »uajare«»e, Hall, pi. iii, flgs. 7 and 8 497-498 



Crtistacea. 

 Trilobites. 



Cyphaspis, Burnieister 498 



G. christyi, Hall, pi. iii, fig. 9 498-499 



DEVONLiN. 



Polypi. 



Zaphrentis, Rafinesque & Clifford 499 



Zaphrentis ? White, 1880, pi. v, figs. 3 and 4 499 



Favosites, Lamarck 499 



Favosites ? White, 1880, pi. v, figs. 1 and 2 499 



Brachiopoda. 



Strnphodonta, Hall 500 



S. demifisa, Conrad, ])1. iv, flgs. 6 and 7 500-501 



Orthi.'.; Dalman 501 



O. ioweTuis, Hull (.'), pi. v, flgs. 10-12 501-502 



Atrypa. Dalman .'>02 



A. reticularis, Linna.'U.s, pi. v, figs. 7-9 502 



Athyris, M cCoy 502 



A . ritlatn. Hall, pi. i v, flgs. 8 and 9 502-.'J0:! 



Spirifer, Sowerby 503 



