696 INDEX TO VOLUME VIII. 



PAGE. 



Lophophyllum profundum Worthen 79* 



Loxonema Phillips 139 



eerithiiforme Meek and Worthen 139 



' ' peoriense Worthen 139* 



Quadri-carinatum Worthen 140* 



Macrocheilus Phillips 143 



altonense Worthen 143* 



Macrodon Lycett 123 



sangamonensis Worthen 123* 



Marshall county, Iowa, strata and fossils 157 



Megistrocrinus Owen and Shumard 169 



nobilis W. & Sp 169* 



parvus W. & Sp 171* 



Modiola Lamarck ' 125 



' ' illinoiensis Worthen 125* 



Murchisonia D'Arch. & Vern 141 



' keokuk Worthen 141* 



* ' lasallensis Worthen 141* 



Myalina DeKoninck 127 



" monroensis Worthen 127* 



Naticopsis McCoy 144 



' ' madisonensis Worthen 144* 



Nautilus Breynius 148 



montgomeryensis Worthen 148* 



Nucula Lamarck 128 



illinoiensis Worthen 128* 



Onychocrmus W. & Spr 199 



Oolitic limestone at LeGrand, Iowa 157 



Orophocrinus von Seebach 201 



conicus W. & Sp 201*,204 



fusiformis W. & Sp 201,203* 



stelliformis (Owen and Shum.) 201 



Orthis Dalman 106 



' resupinata Martin 106 



resupinoides Cox 106* 



Oi thonema Meek and Worthen 145 



' ' carbonarium Worthen 145* 



Orthoceras Breynius 148 



illinoiense Worthen 148* 



lasallense Worthen 149* 



okavense Worthen 149* 



rushense McChesney 149 



sp 151 



Palseocrinoidea Wachsmuth and Springer , 83 



Pelmatozoa 163,201 



Pentacrinus Schlth 161 



(Pentremites) stelliformis Ow. & Shum . . 201 



Pinna Linnteus Ill 



Pinna missouriensis Swallow Ill 



sancti-ludovici Worthen Ill* 



Platycrinidfe 186 



Platycrinus Miller 186 



Platycrinus burlingtonensis O. & Sh 186 



" halli Shumard ..189 



