SECOND SERIES: PULMONATA. 



MANUAL 



OF 



CONCHOLOGY 



STRUCTURAL AND SYSTEMATIC 



WITH ILLUSTRATIONS OF THE SPECIES 



FOUNDED BY 



GEORGE W. TRYON, JR. 



CONTINUED BY 



HENRY A. PILSBRY, Sc.D.. 



SPEC.AI. CURATOR DEPARTMENT OF MOLUCCA, ACADEMY OF NAT* 

 SCIENCES OF PHILADELPHIA. 



PHILADELPHIA : 



PUBLISHED BY THE CONCHOLOGICAL DEPARTME 

 ACADEMY OF NATURAL SCIENC1 

 OF PHILADELPHIA. 



