INDEX. 235 



PLATES. 



Stricklandinia 



louisvillensis 34 



Strophodonta 



demissa 33, 18 



hemispherica 18 



inequistriata 17 



nacrea 



perplana 18 



plicata 



prof unda 17, 29 



striata 



Strophomena 



rhomboidalis (Devonian) 18 



rhomboidalis (Silurian) 



Terebratula 



harmonia - 17 



jucunda 



lincklaeni 17 



roemingeri _ . - ..- 16 



Trematospira 



hirsuta 16 



helena 32 



Tropidoleptus 



carinatus - -- 17 



Zygospira 



kentuckiensis - 34 



PTEROPODA. 

 Styliola 



fissurella 



Tentaculites 



sialariformis 31 



GASTEROPODA. 

 Bellerophon 



leda . --- 17 



