HL 
^j. 
^ibrarg of t^e p;tiscum 
OP 
COMPARATIVE ZOOLOGY, 
AT HARVARD COllEGE, CAMBRIDGE, MASS. 
JFounDet) bs pvfbate subscrîptfon, fn 1861. 
JSFo. ^S/fA, 
10 ■ /g-gr. 
