626 



INDEX. 



Scaphites costatus 421 



Scaph il< a gigas 414 



Scaphites Ivanii 414 



Scaphites larvseformis 418 



Scaphites Mandanensis 4, 415, 441 



.Scaphites Mandanensis 44:: 



Scaphites Nicolletii 435 



Scaphites nodosus 414 



Scaphites Lodosus, var. brevis 426 



Scaphites nodosus, var. exiles 42b 



Scaphites uodosus, var. plenus 429 



Scaphites nodosus, var. quadrangularis 428 



Scaphites pulcherrimus 430 



Scaphites striatus 421 



Scajjhites tridens 414 



Scaphites trinodosus 414 



Scaphites ventricosus 425 



Scaphites vermiformis 423 



Scaphites Warreni 420 



Scaphites Wyomingensis 423 



SCAPHITID.E 413 



Schissodesma 204 



Sch izodesma 203 



Scissodesma 203 



Scurria 294 



Scurria fragilis 297 



Sella 334 



S'eila 335 



Semilimax 544 



Serpula 506 



Serpula tenuicarinata 507 



Serpula rermicularis 506 



Sekpomms 506 



Serrifusus 373 



Siliqua biplicata 252, 253 



Siliquaria 252 



Simplegas 4S9, 492 



SinistraMa 372 



Sinistralia ■'■'■'• 



Sintoxia 511 



SiPHONAUiiD^; 285 



Solariella .... 301 



Solarium 300 



bolarinm flexistriatum 300,302 



Soleruya. 126 



Solemya 126,127,128 



Solemya anstralis 126 



Solemya subplicata 129 



SOLEMYIDiE 126 



Solemyidat 128 



Solen 250 



Solen ? Dalcotensis 251 



Solen feqnalis 251 



Solen subplicata 129 



Solenid^e 250 



.' Soli noceras 410 



Soleuochilus 491 



Solenochilus 489,495 



Page. 



SOI.ENOCONCn^E 206 



Sohnomya 126 



Solenymya 126 



Solidula 277 



Solidula ( Aiiamiiua) subelliptica 280 



Solidula attenuata 281 



Solidula subelliptica 280 



SpatangidjE 5 



Spalangus micraster 5 



Sphaira 136 



Hpliara Madrida 136 



Sphairella 138 



Sptncriola 136 



Spbieriola ? cordata 137 



Sphseriola f endotrachys 139 



Sphseriola ? Warrenaua 138 



Sphserium 525 



Spluerium eorneum 526 



Sphserium formosum -» 526 



Spbicrium planum 526 



Sphserium recticardinale 527 



Sphcerium rhomboideum 527 



Sphserium subellipticum 527 



Sphenodiseus 462 



Sphruodiscus 463,473 



Spiraxis limnaiformis 554 



Spirorbis 506,535,536 



Sphonema 341 



Spironema tenuilineata 342 



Stagnicola 532,533 



Slalagmium 74,75 



Stavelia 68 



Stavelia 67 



Striarca 78 



Slriarca 77,80 



Strotnbns pes-pelicanus 320 



Si nimbus speciosa 321 



Sulcobuccinum 349 



Surcula 381 



Surculites ■ 382 



Sureulites 381 



Sure a I ilex annosa 382 



Syncyclonema 24 



Sy ncyclonema 26 



Syncyclonema rigida 27 



Sgntoxia 514 



Syringites 266 



Syrinx 372 



T. 



Tamarindiformis 



Tancredia 



Tancredia 



Tancredia Americana 



69 

 140 

 141 

 142 



Tancredia donaciformis 140 



Tancredia (Heitangia) angusta 143 



Tancredia (flellaugia) Dionrillensis 143 



Tancrediixs; 140 



