NORTH AMERICAN CONCHOLOGY. 



43 



Tol. 



Pa. 



K^ame. 



ii 



83 



Hells interna. 





84 



Rafinesquea. 





84 



lineata. 





84 



multidentata 



Locality. 



August, 1845. 

 ii 115 Menke. — Kritische ubersicht der lebeuden Valvata-Arten ; 



VOm HERAtrSGEBEB. 



u 



121 



121 



Delaware, &c. 



Silesia, &c., N. Ame- 

 [rica. 



129 

 130 



Valvata tricarinata Say. 



Cyclostoma tricarinata Say. 

 Valvata carinata Sowb. 

 depressa Pfr. 



Valvata media Fer. 



pidcheUa Studer. 

 spirorhls Hartm. 

 sincera Bay. 

 umbilicata Fitzing. 

 tricarinata (var.) simplex Gould. 

 humerosa Say, 

 lustrica. 



Amnicola lustrica Say. 



October, 1845. 



ii 152 Pfeiffer. — Diagnosen einiger neuer Heliceen : vom Dr. L. 





Pfeiffek. 





152 



Helix Buffoniana P/r. 



Mexico. 



152 



levis I'/r. 



California 



154 



areolata Pfr. 



California 



February, 1846. 



iii 19 Philippi. — Diagnosen einiger neuer Conchylien-Arten : 



April, 





vom Dr. R. A. Philippi. 





19 



Corbula alba Phil. 



Mazatlau 



19 



Tellina cicercula Phil. 



Mazatlan 



19 



lenticula Phil. 



Mazatlau 



20 



dichotoma PA/7. 



Mazatlan 



20 



ervilia Phil. 



Mazatlan 



20 



flexuosa Say (note). 





20 



Diplodonta obliqua Phil. 



Mazatlan 



21 



Lucina cancellaria Phil. 



Mazatlan 



21 



Patella pediculus Phil. 



Mazatlan. 



1846. 







51 



Siphonaria Lecanium Phil. 



Mazatlan 



51 



TrochuB disculus Phil. 



4 



Mazatlan 



