NORTH AMERICAN CONCHOLOGY. 



lOT 



Cyclostomidae. 



Page. Plate. Fig. Name. locality. 



82 Cyclostoma dentata Say, e. 1. Florida. 



82 Cincinnatense Lea, e. 1, Cincinnati. 



A. \_Amnicola'\ Sayana Anthony? 



82 

 82 

 82 

 82 



Helicinidae. 



Helicina orbiculata Say, e. 1. 



Florida. 



fastigiata Say, e. 1. 



Illinois. 



plicata Say. 





occulta Say, e. 1. 



Western States 



84 vi 

 vii 



134 



84 vii 132 a, b 



85 vii 133 



85 

 85 



86 



86 

 86 

 86 

 86 

 86 

 86 

 86 

 86 



87 

 87 

 87 



88 XXXV 333 



m 



PECTINIBRANCHIA. 

 Turl>iiiidaB. 



131 a, b Paludina disscisa Say. 



P. decisa Say. 



ponderosa Desbayes in Lam. 

 integra Say. 



P. her OS De Kay. 

 isogona Say. 



P. pallida Lea ? 

 transversa Say, e. 1. 

 intertexta Say, e, 1. 

 ponderosa Say, e. 1. 



P. heterostropha Kirtland. 

 Georgiana Lea, e. 1. 

 vivipara Say, e. 1. 

 magnifica Conrad, e. 1. 

 subpurpurea Say, e. 1. 

 genicula Conrad, e. 1. 

 subglobosa Say, e. L 

 dissimilis Say, e. 1. 

 ? lapidaria Say, e. 1. 



Cyclostoma lapidaria Say. 

 subcarinata Say, o. 1. 

 bimonilifera I^ca, e. 1. 

 Amnicola liistrica >Say. 



I-'aluditia lustrica Say. 

 porata Say. 



Paludina porata Say. 

 limosa Say, e. 1. 

 grana Say, e. 1. 

 Cincinnatensis Anthony, e. 1 



Louisiana. 

 Louisiana. 

 Falls of the Ohio. 



Darien, Ga. 



Soutb Carolina. 



Alabama. 



Wabash river. 



Georgia. 



N. W. Territory. 



Pennsylvania. 



Pennsylvania. 



Pennsylvania. 

 Alabama river. 



Delaware. 



Pennsylvania. 

 Cincinnati. 



Nickliiiiana Lea, e. 1. (no descrijjtion given). 



