

f ibrarn of tljc Suscwm 



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COMPARATIVE ZOÖLOGY, 



AT nARVARD COllECE, CAlIBEirCE. MASS. 

 iFounlrcTi öl» prfWte sutiscrfpifon, fn isci. 



From the Library of LOUIS AGASSIZ. 



No. ö'-rO'" 



