3 3 2 >, 2- 



ftbrarn of tin gfascum 



OF 



COMPARATIVE ZOÔLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 



jfountirt bj? prfbatc subscrîptfon, fn 1861, 



Deposited by ALEX. AGASSIZ. 



No. <û$ô/ 







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