^ 



Number 3. 



July, 1841. 



MONOGRAPH 



LIMNIADES 



FRESHWATER UNIVALVE SHELLS 



NORTH AMERICA. 



BY S. STEHMAN HALDEMAN, 



MEMBER OF THE PHILADELPHIA ACADEMY OF NATURAL SCIENCES. 



CONTENTS. 



LiMNEA CATASCOPIUM, 

 PINGtnS, 

 EMARGINATA, 

 MEGASOMA, 

 RUGOSA, 

 JTJGULARIS, 

 APPRESSA, 



Plate 1. 



PHILADELPHIA : 

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



PARIS: J. B. Bailliere Rue de l'ecole de medicine, 17. 



LONDON: H. Bailliere, 219 Regent Street. 



E. a. Dorsey, Printer, 



Price to subscribers, $1 a number, of 5 plates, and one sheet of letter- 

 press, payable on tlie delivery of each. Single numbers, $1 25. 



