Xoljl 



OF 



COMPARATIYE ZOÔLOGY, 



AT HARVARD COllEGE, CAMBRIDGE, IIASS, 

 jyountJcîi bv pribate subscrfptfon, in 18G1. 



Deposited by ALEX. AGASSIZ. 



No. dOli^fl, 



Jîfl 



C 



