1 1 5 tf/S 



Moll' k(r^'^'> -^ ^<^f^ 



// 



Number 1. 



July, 1840. 



MONOGRAPH 



ra of Mollus&s 

 LIMNIADES SedioMl Library 



\krmv 



AND OTHER 



FRESH-WATER UNIVALVE SHELLS 



NORTH AMERICA. 



BY S. STEHMAN HALDEMAN, 



MEMBER OF THE PHILADELPHIA ACADEMY OF NATUSAL SCIENCES. 



CONTENTS. 



PaLUDINA DECISA, 



,, SUBCARINATA, 



„ INTEGRA, 



„ PONDEROSA, 



„ GENICULA, 



Plate 1. 



„ 3. 



,, 4. 



„ 5. 



PHILADELPHIA: 



PUBLISHED FOR THE AUTHOR BY J. DOBSON, 106 CHESNUT ST. 



E. G. Borset/j Printer, 

 n ■ 



Price to subscribers, One Dollar a number, of 5 plates; payable on the 

 delivery of each. Single numbers, One Dollar and Twent3'-five Cents, 



