NORTH AMERICAN CONCHOLOGT. 



ic;: 



36 



iii 



27 a, b 



36 



iii 



20 a, b 



37 



iii 



22 



37 



iii 



35 a, b 



38 



iii 



24 a, b 



38 



iii 



29 



39 







39 



iii 



31 



40 



iii 



32 a, b 



40 



iii 



33 a, b 



Page. Plate. Fig. Kame. Locality. 



34 ii 18 a, b Helix diodonta Say. 



35 iii 19, 21a, b mono don i?aciei. 



H. f rater na Say. 

 convexa Lam. 

 hirsuta Say. 

 elevata Say. 



H, Knoxvilliana Say. 

 fuliginosa Griffith. 

 cellaria Muller. 

 H. glaphyra Say. 



nitida Drapamaud. 

 suppressa Say. 

 intertexta Gould. 

 iaornata Say. 

 labyrinthica Say. 

 ligera Say? 

 minuta Say. 



II. pidchella Binney. 

 multilineata Say. 

 Pennsylvanica Green. 

 perspectiva Say. 

 profunda Say. 



II. Richardi Ferussac. 

 striatella Anthony. 



II. ruderata Studer? ' 



41 a, b solitaria Say. 



30 a, b rufa De Kay. 



lineata Say. 



Planorbis parallelus Say. 

 338 chersina Say. 



major Binmy, e. 1. Southern States, 



inflecta Say, e. 1. N. C, Wrn St's. 



irrorata Say, e. 1. Pennsylvania. 



var. lactca Ferussac. 

 corpuloides Montagu, e. 1. Near Boston, 

 egena Say, e. 1. Pennsylvania. 



Mitchelliana Lea, e. 1. Ohio. 



porcina Say, e. 1. N. W. Territory. 



Vancouverensis Lea, e. 1. Oregon. 

 interna Say, e. 1. Missouri. 



Nuttalliana Lea, e. 1. Oregon. 



Columbiana Lra, e. 1. Columbia river. 



Callforniensia Lea, o. 1. California. 



gularia Say, e. 1. Ohio. 



Townsendiana Lea, e. 1. Columbia river. 



41 iii 34 a, b 



41 iii 35 a, b 



42 iii 38 a, b 



42 iii 37 a, b, c 



43 iii 40a,b, c 



43 iii 



44 iii 

 44 



44 XXXV 



45 



45 



45 



45 

 45 

 45 

 45 

 45 

 46 

 46 

 46 

 46 

 46 

 46 



