X-L^^^J 





Alex. Awatoib . 



f ibrarn of tbe liluscum 

 COMPARATIVE ZOÜLOGY, 



AT HARVARD CöllEGE, CAMBRIDGE, MASS. 

 JFomiiJrS fau viiMatt sufasniptioii, in 18«1. 



Deposited by ALEX. AGASSIZ. 



1 AVOjD.S"!-^ 



