NORTH AMERICAN CONCHOLOGY. 6T 



Name. Locality. 



Limnea megasoma Say. N. W. Terr., Vermont. 



rugosa Vat. Mexico. 



jugularis Say. N. York, Mich., N. W. 



L. speciosus Rossm. Terr., Oregon. 



stagnalis (Sill. Journ.) 

 Paludina rufa Ilald. (pi. iii, fig. 1.) 

 Anculosa fusca Ilald. Oregon. 



Ancylus (Velletea) Nuttalli Ilald. Oregon. 



diaphanus Ilald. Ohio. 



Limnaea ferruginea Haid. Oregon. 



Physa (Diastropha) Integra Ilald. Indiana. 

 Melania varicosa Ward. Ohio. 



M. rufula Hald. (var. ?) 

 Bulimus vermetus Anthony. Ohio. 



Melania inflata Hald. Alabama river. 



curta Ilald. Ohio river. 



Physa concolor Hald. Oregon. 



Anculosa (Mudalia) affinis Said. Ohio. 

 Paludina vitula Iiaf. = P. Bengalensis. 

 Physa osculans = heterostropha ? 



No. IV.— January, 1842. 



IS v Limnea appressa Say. Lake Superior to New 



L. speciosus Ziegl. England. 



20 vi fragilis Lin. N. W. Terr., Can., Me., 



L. elodes Say. Mass., N. Y., L. Erie, 



palustris Sowb. Ohio, Pa., Oregon. 



24 vii ■umbrosa Say. Mo., N. Y., Ohio, Ind., 



L. elongatus Say. 111., Upper Canada. 



26 viii reflexa Say. Ohio, Ind., 111., N. Y., 



L. palustris var. distortus Rossm. Lakes Erie and Sup. 

 exilis Lea. 



28 is 1-5 attenuata Say.- Mexico. 



29 ix 6-8 expansa Hald. Vermont. 



31 s desidiosa Say. New England to Miss. 



L. obrussa Say? river; lat. 35° to 45 D . 



acuta Lea. 



Philadelphia Lea. 



3 of cover Anculosa crassa Hald. Clinch river? Tenn. 



3 " Melania aequalis Hald. Nolachucky river. 



3 " uncialis Hald. Beaver cr., N. E. Tenn. 



3 " symmetrica Ilald. Roanoke river, Va. 



3 " bellacrenata Hald. Alabama. 



3 " Limnea vitrea Hald. 



3 " Amnicola attenuata Hald. Montgomery Co., Va. 



