364 



INDEX. 









PAGE. 





Orthis 



gibbosu, Billings, . 







224 



Orthis 



0. 



Halli, Safford, 





200, 



223 



0. 



O. 



hemipronites, von Buch, 







238 



O. 



O. 



hipparionyx, Schnur, 







258 







0. 



Hippolyte, Billings, 



. 217 



221, 



228 



0. 



0. ? 



Holstoni, Safford, 





218, 



340 



0. 



0. 



hybrida, Sowerby, 



. 210 



224, 



342 



0. 



0. 



idonea, Ball, 







225 



0. 



o. 



impeiator, Billings, 







222 



0. 



o. 



iinpressa, Hall, 



212 



214, 



226 



0. 



0. 



incisiva, Waagen, 







210 



0. 







infera, Calvin, 







224 



0. 







insculpta, Hall, 







222 



0. 



0. 



insignis. Hall, . 







211 



0. 



0. 



insularis. 







270 



0. 



0. 



lowensis, Sail, 





212, 



226 



o. 



0. 



Iphigenia, Billings, 







222 



0. 



0. 



Jamesi, Hall, 



191 



195, 



221 



0. 



0. 



Kankakcnsis, McChesney, 







221 



0. 



0. 



Kaslcasldensis, MoChesney, 







350 



0. 



0. 



Keokuk, Hall, 







262 



0. 



0, 



laticosta, Meek, 







223 



0. 



0. 



Laurentina, Billings, 



. 194 



231, 



233 



0. 



0. 



lentioularis, Wahlenherg, 





207, 



224 



0. 



0. 



lentil'ormis, Hall, 







224 



0. 



o. 



Leonensis, Hall, 







224 



0. 



0. 



Leucosia,lfi(jiZ, 







2-25 



0. 



o. 



lepitla, Hall, 





207, 



2-24 



0. 







lepida, Schnur, 





259, 



260 



0. 



0. 



Livia, Billings, 







225 



0. 



o. 



Leonensis, Walcott, 







222 



0. 



0. 



loricula, sp. nov.. 





197, 



222 



0. 



0. 



Lucia, Billings, 







225 



0. 



0. 



lynx, ion Eichwald, . 





202, 



223 



0. 







Macfarlanii, Meek, 



. 190 



212, 



226 



0. 



0. 



Macleodi, Whitfield, . 







224 



0. 



0. 



Maria, Billings, 







222 



0. 



0. 



marniorea, Waagen, . 







214 



0. 



0. 



Meeki, Miller, 



. 206 



207, 



224 



0. 



0. 



Merope, Billings, 







242 



0. 



0, 



Michelini, Leveille, . 



194, 219 



225, 



343 



0. 



0. 



niimica. 







200 



o. 



0. 



Minneapolis, N. H. Winehell 







224 



0. 



o. 



Missouriensis, Swallow, 







225 



0. 



o. ? 



Morganiana, Derby, 



213, 21+ 



216, 



22G 



0. 



0. 



multisecta. Meek, 





207, 



224 



0. 



0. 



muUistriata, Hall, 





212 



226 



o. 



0. 



musculosa, Hall, 



190, 210, 211, 



225, 



258 



0. 



0. 



Mycale, Billings, . 





217, 



232 





0. 



Nevadensis, Meek, 







226 











Nisis, Hall, 







217 



0. 



o 



oblata, Hall, 



210 



224 



225 



0. 



0. 



occasus, Hall, 







225 



0. 



0. 



occidentalis, Hall, 





202, 



222 



0. 



0. 



Oliiierana, de Verneuil, 







266 



0. 



0. 



Orbignyi, Davidson, 







283 



o. 



0. 



orthambonities, Billings, 





221, 



228 



0. 



o. 



Oweni, sp. nov,. 







225 



0. 



0. 



Panderiana, sp. nov.. 



. expl. Plate I 



0. 



0. 



Pecosi, Marcou, 



210 



225, 



22B 



0. 







pecten, Dalman, 







191 



o 



0. 



■pectmella,_Emmons, . 



„ 195, 196 



222 



228 



o 



0. 



pectinella, Emmons, var. se 



miovalis, Hall 



222, 



228 



0. 



0. 



peduncularis. Hall, 







: 226 



o. 



1 Peloris, Hall, 

 Penelope, Hall, 

 Penniana, Derby, 

 Pennsylvanica, Simpson, 

 Fepina, Hall, 

 perelegans, Hall, . 

 perveta, Conrad, 

 Ijlanoconvexa, Hall, 

 platys, Billings, 

 plicatella. Hall, 

 porcata, McCoy, 

 prava, liaW, ', 

 productoides, Murchison, 

 propinqua. Hall, . 

 punctata. Hall, 

 punctostriata, 

 Quacoensis, Matthew, 

 quadrans, Hall, 

 i-ecta, Conrad, 

 resupinata, Martin, 

 resupinoides. Cox, 

 retrorsa, Salter, 

 retrorsisti'ia, 

 reversa, 



robusta. Hall, . 

 rugiplicata, Hall, . 

 Saffordi, sp.nov., 

 Scovillii, Miller, 

 sectostriata, 

 Semele, Hall, 

 senecta, sp. nov., 

 sinaata, HaU, 

 socialis, 

 solitaria, HaU, 

 spiri/eroides, McCoy, . 

 Stonensis, Safford, 

 striatella, Dalman, 

 striatula, Schlofkeim, 

 strophomenoides, Hall, 

 subaiquala, Conrad, 

 subcarinata. Hall, 

 subelliptica. White and Whitfield, 

 suborbicularis. Hall, 

 subquadrata, HaU, 

 superites, sp. nov., 

 Swallowi, Hall, 

 Sweeneyi, 2f. H. Winchdl, 

 testudinaria, Dalman, 190, 191, 192, 



tetragona, .... 



Thiemii, White, 



Tioga, Hall, 



tricenaria, Conrad, 



triplicatella. Meek, 



Tritonia, Billings, 



tubulostriata, Hall, 



TuUiensis, Hall, 



uberis, Billings, 



umbracvlum, .... 



Vanuxemi, Hall, 



Vanuxemi, var. pulchella, Herrick, 



varica, Conrad, 



Wangenheimmi, de Verncnll 



Wisbyensis, 



PAGB. 

 225, 343 



211 

 . 210, 



230, 

 207, 



. 207, 

 207, 



194, 196 

 . 197, 



212, 



211,213, 



. 213, 



197, 



218, 



. 191 



199, 



194, 2o; 



. 20: 



194, 196, 19 



. 21' 



213, 



196, 222, 



805, 206, 207, 



218, 



212, 

 191, 193 



194, 

 . 217, 



210, 

 . 212, 



. 248, 

 225 



225 

 226 

 225 

 232 

 234 

 224 

 224 

 218 

 221 

 222 

 255 

 317 

 226 

 217 

 217 

 232 

 234 

 222 

 226 

 226 

 222 

 203 

 197 

 262 

 217 

 340 

 222 

 221 

 225 

 226 

 213 

 200 

 225 

 271 

 234 

 305 

 213 

 223 

 224 

 224 

 325 

 225 

 341 

 224 

 326 

 228 

 217 

 224 

 219 

 225 

 226 

 221 

 221 

 232 

 325 

 226 

 224 

 256 

 342 

 225 

 223 

 319 

 207 



