Soso 



; Lr 



Jibraru of % SJusntm 



OF 



COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 

 JFountie'tJ bv prfbate suhscvfptfon, in 1861. 



Deposited by ALEX. AGASSIZ. 



No. &, f// 



