SECOND SERIES: PULMQiN'A.TA 



MANUAL 



OF 



NCHOLOGY 



STRUCTURAL AND SYSTEMATIC. 



WITH ILLUSTRATIONS OF -THE SPECIES. 



BY GEORGE W. TRYON, JR. 



CONShRVATOR OP THE CONOHOLOGTCAL SECTION OF THB ACADEMY OF NATURAL 

 SCIENCES OF PHILADELPHIA. 



VOL. III. 



HELICID^:-VOL. i. 



PHILADELPHIA: 

 PUBLISHED BY THE AUTHOR, 



Academy of Natural Sciences, Cor. 19th Sf Race Sts. 



1887. 



LIBRARY 



UNIVERSITY OF CALIFORNIA 

 DAVIS 



