PLATE I. 

 Hymenopterous Larv.e. 



1. Croesus latitarsus Nort., on birch. 



2. Giant Sawfly, Cinibex americana Leach. 



3. A Sawfly larva, possibly (Pteronus) Pteronidea ventralis Say, 



feeding on willow. 



4. Tomostethus (Monophadnus) tardus Say, on ash. 



5. Peach Sawfly, Pamphilius persicus MacG. 



All natural size. 



