)/lO 



> i j ) 



■AlaTiii Agirrit 



OF 



COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE, CAMBRIDGE, MASS. 

 j?ounïJrt bv jnfbntc subscvtytfon, fn 1S61. 



Depositedby ALEX. AGASSIZ. 



No. 3o 3 



