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f ibran) of llje gtitscum 



OF 



COMPARATIYE ZOÖLOGY, 



AT HARVARD CfllLEGE, CAMBRIDGE, MASS. 



jfounlieli bi» prfbate sutscrfptfon, fn 1861. 



Deposited by ALEX. AGASSI Z. 



^l No. ^91 <c 



