INDEX TO PAllT II. 



651 



Ostrea strigilccula 



sp.? 



Paracyclas elli|)tica 



occidentalis 



peroccidcns 



IVntaciiiiitesasteriscus? 



ri'inio Carboniferous, Fossilsof the 



riitgio.sfoma lincata - . ... 



riagiostoma occidentalis 



riatyceras 



Polypora 



I^orauiboiiites obscurus 



rosidonomija ? fragosa 



Totsdam group, Fossils of the 



Trimordial, Fossils of the 



I'roductus elegaus - 



Flemiugi rar. Burlingto- 



neusis 



lajvicostus ? 



iiiesialis . 



Prattenianns 



semireticulatus 



Proetus Loganensis 



niacrocephalus 



pcroecideus 



rterocepliaUa Sancti-sahcc 



Pterocephalus laticeps 



Sancti-sabic '. 



Ptydiaspis Miniscaeusis 



pustulosa 



Kaphistoma acuta 



lenticularis . . , 



staminca 



llbynchouella cuboides 



Emnioiisi 



gnathopliora ? 



Myrina 



pustnlosa ! 



vanans 



venusta 



San Saba Valley, Potsdam sand- 

 stones of 



Page. 



287 

 285 

 248 

 248 

 248 

 280 

 273 

 293 

 292 

 202 

 202 

 234 

 249 

 205 

 205 

 2(35 



265 



2G6 



2GG 



267 



207 



2G4 



263 



262 



200 



221 



223 



224 



223 



235 



235 



235 



247 



247 



284 



284 



257 



284 



247 



/ 



Sedgewickia ? concava 



SeI'TOCAUUIA 



Septocardia Carditoidea 



typica 



Silurian, Fossils of the 



Snowstorm Hill, Fossils and sec- 

 tion of 



Si)iritera alba-jnuensis 



Spirifcra ? (dia 



Spirifera bipUcatus 



contronata 



S])iriJ\r f Ilomfnvji f 



Spirifera imbrex 



Maia 



setigcra 



striata 



sp. ? 



199 



Spiriferina alia 



Homfrayi f 



Straparollus Ophirensis 



planodorsatns 



plauus 



similis ?-ar. planus 



umbilicatus 



Utahensis 



Streptorhynchus oquivalvis 



inHatus, 



Strophodonta Canace ». 



Strophomcna Neraea 



rhoraboidalis . . . ^ 



Syringopora \ ■ • 



Taiicredia Warreuana 



Terebratula Augusta . . 



Iluniboldteusis 



Utah 



Triassic, Fossils of the 



Trigonia Conradi 



(juadrangularis 



Wavorly group, Fossils of the 



Whitfield, 11. P., and Hall, James, 

 IJeport of 



27(5 

 2!I4 

 296 

 295 

 232 



203 



255 



281 



255 



254 



281 



271 



250 



270 



2(i9 



271 



281 



281 



261 



259 



259 



259 



261 



259 



252 



252 



246 



233 



253 



202 



297 



2^ 



282 



258 



280 



294 



293 



251 



197 



