NORTH AMERICAN CONCHOLOGT. 



25 



[Chenu, Bibliotheque Concliyliologique. ] 



Page. 



PI. 



Fig. 





Name. 



35 



iv 



4,4% 



4b 



Venus grata Say. 



36 



V 



2,2- 





Scalaria clathrus Linn. 

 Turbo clathrus Linn. 

 Scalaria communis Lam. 



37 



V 



2", 



2« 



multistriata Say. 



37 



V 



2^ 



21 



lineata Say. 



38 



X 



4-6 





Amphidesma transversum Say. 



39 



X 



7-10 





as quale Say. 



40 



xi 



1-2 





Fusus corneus Linn. 



Murex corneus Linn. 

 Fusus Islandicus Mart. 

 Murex Islandicus GmeL 



40 



xi 



3,4 





cinereus Say. 



41 



xi 



5 





Paludina ponderosa Say. 



41 



xi 



6 





subpurpurea Say. 



42 



xi 



7-9 





intertexta Say. 



43 



vii 



5, 5» 





Lymneus umbrosus Say. 

 L. elongatus Say. 



44 



vii 



4,4* 





reflexus Say. 



44 



viii 



3,3- 





elodes Say. 



45 



xii 



1,2 





Unio ventricosus Barnes. 



U. oi-atus (var. b.) Lam. 

 occidens Lea ? 



45 



xvii 



1-3 





interruptus Say. 



46 



xi 



10-1! 



2 



globulus Siiy. 



46 



xiii 



1, 1% 



1" 



declivis Say. 



47 



xii 



3,4 





Area staminea Say. 



48 



xvii 



4,5 





lienosa Say. 



48 



xiii 



2 





Helix clausa Sny. 



48 



xiii 



2- 





elevata .S'«^. 



//. Knoxvilliana Per. ? 



49 



xiii 



2^ 



2o 



profunda Say. 

 IL liichardi Lam. 



50 



xiii 



3,3", 



, 3% 3" 



Siphonaria alternata Sny. 

 Patella alternata Say. 



51 



xiii 



4,4% 



4b 



Bullina canallculata Say. 



Volvuria canaliculata Say. 



52 



xiii 



5,5% 



6, 6% 6" 



Cardlta tridentata Say. 



Venericardia tridentata Say. 



52 



xiv 



1 1" 



!•> 



Unlo lapillus Say. 



53 



xiv 



2,2% 



2" 



camptodon Say. 



53 



XV 



l,la 





lugubris Say. 

 U. alcr Lea. 



64 



xiv 



3,3% 



3" 



Crepidula plana Say. 



