Alez. Agassiz. 



i^ibrarg of tijc ^nscum 



OF 



COMPARATIVE ZOOLOGY, 



AT HARVARD COLlEfiE, CAMBRIDGE, MASS. 

 JFoun^eli bj prfbatc subscrfptfon, [n 1861. 



Deposited by ALEX. AGASSIZ. 



No. 6 y ^jt 



