

SECOND SERIES : PULMONATA 



MANUAL 



OF 



CONCHOLOGY; 



STRUCTURAL AND SYSTEMATIC. 



WITH ILLUSTRATIONS OF THE SPECIES. 



FOUNDED BY 



GEORGE W. TRYON, JR. 



CONTINUBD BY 



HENRY A. PILSBRY, Sc.D.. 



SPECIAL CURATOR DEPARTMENT OF MOLLUSCA, ACADEMY OF NATURAL 

 SCIENCES or PHILADELPHIA. 



Part 



PHILADELPHIA : 



PUBLISHED BY THE CONCHOLOGICAL DEPARTMENT 



ACADEMY OF NATURAL SCIENCES 



OF PHILADELPHIA. 



