w' / /. 



MANUAL 



OF 



Structural and Systematic. 



WITH ILLUST]^ATIONS OF THE SPECIES. 



By GEORGE W. TRYON, jR. 



(.■'o>'r,x;::VATOu cy t::;; CoNrnoLoniCAT, S:'.;'^io>f o? T:r;: Acvdemy op Natural 

 .SciExcr;3 ov rniLADcLPuiA. 



^ OL. A . 



MARGINELLID^, OLIVID^. COLUMBELLID^E. 



PHILADELPHIA: 



Xc>i7 



Published by tlie Author/vi, tr)^ '^ 



Academy of Natural Eciences. Cor. 19th & Race Sts. t«.Ti •-• ^"^^^ ^^ 



r 



1883. 



ti B 





