INDEX OF SPECIES. 



849 



septariana, Yoldia, 402 

 seriata, Gadopora, 93 

 seriatim-granulata, 



Mesalia, 729 



Turritella, 729 

 serica, Crenella, 522 

 sericeus, Plectambonites, 227 

 serpens, Aulopora, 78 

 serrulata, Lophospira, 636 

 setigerus, a, 



Chonetes, 237 



Crania, 207 



Reticularia, 339 

 sexcarinata, Tetranota, 613 

 sexsulcatus, Anisomyon, 813 

 sextans, Dicellograptus, 33 

 shafferi, Arthropora, 157 

 shilohensis, Actaeon, 806 

 shumardana, Productella, 242 

 shumardi, 



Amplexus, 59 



Anisomyon, 814 



Limnaea, 817 



Polypora, 149 



Turbo, 676 



Turbonopis, 676 

 shumardiana, 



Lunatia, 717 



Natica, 717 

 sillmani, Scalaria, 710 

 simcoense, Synaptophyllum, 73 

 similis, 



Eridotrypa, 134 



Euomphalus, 659 



Holopea, 676 

 simplex, 



Arthropora, 157 



Bactropora, 155 



Hastula, 800 



Terebra, 800 



Zaphrentis, 57 

 simplicius, Pecten, 498 

 simpsoni, 



Goniobasis, 744 



Inoceramus, 441 

 simulans, Crepipora, 122 

 simulatrix, 



Archinacella, 606 



Prasopora, 129 

 sinuata, urn, 



Hebertella, 256 



Ilionia, 379 



Leiorhynchus, 290 

 sinuosa, 



Pterochaenia, 429 



Ptychopteria, 450 

 siouxensis, Breviarca, 408 

 smithi, 



Lucina, 557 



Venericardia, 544 

 socialis, e, 



Botryllopora, 127 



socialis, e, 



Ctenodonta, 394 



Leptodesma, 426 

 solarioides, Pycnomphalus, 672 

 soleniscus, Ostrea, 460 

 spatulata, Lingula, 197 

 speciosa, um, 



Cardium, 559 



Productella, 242 



Worthenia, 640 

 spectabilis, Planorbis, 819 

 spergenensis, e, 



Hapsiphyllum, 58 



Straparollus, 655 



Zaphrentis, 58 

 spbaerulata, Trepospira, 648 

 spillmani, Cardium, 559 

 spiniformis, Helopora, 152 

 spinosa, 



Atrypa, 311 



Spiriferina, 314 



Worthenopora, 165 

 spinulicosta, Productella, 241 

 spinulosa, 



Batostomella, 133 



Bythopora, 134 

 spirale, Platyceras, 682 

 spiriferoides, Athyris, 353 

 springvalensis, Omphalotrochus, 667 

 squamosus, Alveolites, 92 

 staminea, um, 



Conomitra, 790 



Mitra, 790 



Olivula, 797 



Raphistoma, 628 

 stantoni, Nerinella, 746 

 stearnsii, Pecten, 500 

 stellata, um, 



Ascodictyon, 117 



Favistella, 71 

 stevensana, Aclisina, 696 

 stokesi, 



Platytrochus, 101 



Ptychophyllum, 62 



Zaphrentis, 57 

 stolonifera, Reptaria, 120 

 stramineum, 



Dentalium, 579 



Synaptophyllum, 73 

 striaecosta, Pterinea, 420 

 striatellum, Clathrodictyon, 40 

 striatocostata, 



Meekella, 232 



Pugnax, 295 

 striatula, Schizophoria, 268 

 striatus, a, um, 



Aviculopecten, 488 



Helcionopsis, 604 



Ptilopora, 151 



Raphistoma, 627 



Spirifer, 336 



Strombodes, 71 



