PLATE I. 

 Hymenopterous Larv.e. 



1. Cro'sus latitarsus Nort., on birch. 



2. Giant Sawfly, Ciiiibc.v amcricana Leach. 



3. A Sawfly larva, possibly {Pteroinis) Ptcronidca ventralis Say, 



feeding on willow. 



4. Tomostcthus {Monopliadmis) bardiis Say, on ash. 



5. Peach Sawfly, PaiupIiiUns persicus MacG. 



All natural size. 



