S.2M. 



^Cibrarg of tjje gfrtscum 



OF 



COMPARATIYE ZOÖLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 

 jFotmTieü ba? prfbate sufiscuptfon, fn 1861. 



Deposited by ALEX. AGASSIZ. 



, No. yjz&s 



