

zO/*f-/ O / AseiXtA 



JJtbrarjj of % Staeiim 



OF 



COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 



jJountieTi bg jjrfbate sufiscrfptfflit, fu 1861. 



The gift of ALEX. AGASSIZ. 



No. ^rr^ 



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