/f^6 



S^ibrarü of llje glitscum 



OF 



COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 



iFotinïieïi is P^Hjate sutscrfptfon, fn 1861. 



Deposited by ALEX. AGASSIZ. 



J ,/ No. ^^J-a 



