NORTH AMERICAN CONCHOLOGY. 



33 



Page. 



50 



53 

 54 



PI. Fig. 

 xxvii 1 



xxvii 

 xxviii 



CO 

 60 



62 

 63 

 64 



XXIX 



xxix 



55 xxx 



56 xxxi 



57 xxxii 



5S xxxiii 



XXXIV 



xxxiv 



XXXV 

 XXXV 



xxxvi 



Name. 

 Unio gibbosus Raf. 



U. torulosus Raf. 

 perplexus Lea. 

 gibbosus var. perobliquus. 

 teres Raf 



U. anodontoides Lea. 

 Sageri Conr. 

 lapillus Say. 



U. fabalis Lea. 

 fragilis Raf. 



U. gracilis Barnes. 



Symphynota gracilis Lea. 

 alatus Say. 



Metaptera megaptera Raf. 



Symp. alata Lea. 



No. VII— December, 1836. 



Unio inflatus Lea. 



Symphynota inflata Lea. 



U. Alabamensis Conr. 

 leptodon Raf. 



U. planus Barnes. 



Anodonta purpuresccns Sw. 



Symphynota tenuissima Lea. 

 ellipsiformis Conr. 

 lienosus Conr. 



U. Nashvillianus Lea. 

 stapes Lea. 

 intermedins Conr. 

 occidentalis Conr. 



Locality. 

 Wabash, Scioto, and 

 Tenn. rivers. 



Wab'sh,Ind., Detroit. 

 West, rivs., La., Ala. 



Detroit river. 

 Michigan, Ohio river. 



Fox and Detroit, Ala. 



Wise, Mich., Ala., N. 

 W. Terr., Fox riv. 



Alabama. 



Wise, Ala., Scioto 

 rivers. 



Michigan. 



Greene Co., Alabama. 



Alabama. 



Nolachucky riv. .Ten. 

 Currant river, Ark. 



65 

 6J 



69 

 70 

 71 



xxxvi 2 

 xxxvii 1 



No. VIII— February, 1837. 



Unio collinus Conr. North river, Va. 



Sowerbianus Lea. Cumberland river, 



(U. pileus Conr., note on p. 69, Tenn., Elk riv., Ala. 

 N. F. W. S.) 



67 xxxvii 2 



63 xxxviii 1 



xxxviii 2 

 xxxix 

 xl 1 



politus Say. 



U. subrotundus Lea. 

 nexus Say. 



U. arcspformis Lea. 

 G-reenii Conr. 

 Shepardianus Lea. 

 compressus Desh. 



Symphynota depressa Lea. 



Cumberland river, 



Tenn. 

 Bl. Warrior riv., Ala. 

 Altamaha river, Ga. 

 Ohio, New York. 



