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^xbraru of tlje gl;i5extm 



OF 



COMPARATIYE ZOÖLOGY, 



AI DARVARD CöLlEOE, CAMBRIICE, MASS. 

 jfounticti Ijp ptibatc subscriijtfon, in 18G1. 



Deposited by ALEX. AGASSIZ. 



No. Z3ir/ 



