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Jfibrarg of % gtttscum 





OF 







COMPARATIYE ZOÖLOGY, 







AT HARVARD COLLEGE, CAMBRIDGE, MASS. 







jffountoeü bj> ptfbate subscrfptfon, in 1861. 







Deposited by ALEX. AGASSIZ. 







No. y^cr. 



./VcrY./O. /%<7Q 







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