364 



INDEX. 



1 Peloris, Hall, 

 Penelope, HaJl, 

 Penniana, Derby, 

 Pennsylvanica, Simpson, 

 Pepina, Hall, 

 perelegans. Hall, . 

 perveta, Conrad, 

 planoconvexn, Hall, 

 platys, Billings, 

 plicatella. Hall, 

 porcata, McCoy, 

 prava, Hall, | 

 productoides, Murchison, 

 propinqua, Hall, . 

 punctata. Hall, 

 punctostriata, 

 Quacoensis, Matthew, 

 quadrans. Hall, 

 i-ecta, Conrad, 

 resupinata, Martin, 

 resupiuoides. Cox, 

 retroi-.sa, Salter, 

 retrorsistria, 

 reversa, 



robusta. Hall, . 

 rugiplicata. Hall, . 

 Saffordi, s]i. nov., 

 Soovillii, Miller, 

 sectostriata, 

 Semele, Hall, 

 senecta, sp. nov., 

 eiiiuata. Hall, 

 sociali.s, 

 solitaria. Hall, 

 spiriferoides, McCoy, . 

 Stonensia, Safford, 

 striatella, Dalman, 

 striatula, Schlotkeim, 

 stroi)humenoide3, Hall, 

 suba3quata, Conrad, 

 subcarinata. Hall, 

 subelliptica, White and Whitfield, 

 suborbicuIari.s, Hall, 

 subquadrata. Hall, 

 8u])erstes, sp. nov., 

 Swallowi, Hall, 

 Swecney'i, N. H. Winchell, 

 testudiiiaria, Dalman, 190, 191, 192, 



tetragona, .... 



Thiemii, White, 



Tioga, Hall, 



triceuaria, Conrad, 



tri plicatella. Meek, 



Tritonia, Billings, 



tubulo.striata. Hall, 



Tulliensiii, Hall, 



uberis, Billings, 



umbraculum, . . . . 



Vanuxcnii, Hall, 



Vanuxemi, var. pulchclla, Herrick 



varica, Conrad, 



Wangenheimmi, de Verneuil 



Wisbyensis, 



PAGE. 

 . 2-25, 343 



211, 225 

 210, 226 



225 



230, 232 



207, 224 



. 207. 224 



207, 324 



. 218 



194, 196, 221 



. 197, 222 



255 



. 317 



212, 226 

 . 217 



217 



. 232 



224 



. 822 



194, 211, 213, 226 



. 213, 226 



197, 222 

 . 203 



197 

 . 262 



217 

 . 218, 3*0 



222 

 . 221 



225 

 . 226 



198, 212 

 . 200 



225 



. 271 



224 



191, 305 



213 



199, 223 

 . 194, 207, 224 



207, 221 



225 



. 2-25 



194,196,197, 341 



. 217, 224 



213, 226 

 196, 222, 228 



805, 20G, 207, 217 



218, 224 



219 



. 225 



212, 226 



191, 193, 221 



194, 221 



. 217, 232 



210, 225 



212, 226 



224 



248, 256 



225, 342 



. 225 



. 204, 205, 223 



. 319 



207 



