Explanation of Plate 1/ 



Elm Deaf beetle {Gdlerucella luteola (Muller). 

 I. Cluster of eggs, much enlarged. 

 la. Side view of single egg, still more enlarged. 



Recently hatched larva or grub, much enlarged. 



Full grown larva or grub, much enlarged. 

 Pupa, much enlarged. 

 Overwintered beetle, much enlarged. 

 Fresh, brightly colored beetle, much enlarged. 



Leaf showing eating of larvae or grubs and a few holes eaten by beetles, eggs 

 in clusters, cast larval skins and full grown larvae, natural size. 



8. Leaf nearly skeletonized by grubs of larvae and on it three cast larval skins, 



natural size. 



9. Leaf showing holes eaten by beetles, natural size, 



P>ag or r^a^et Worm ( Thyridopteryx ephemera formis Haworth). 



10. Bag or larval case as it passes the winter, natural size. 



11. Same as preceding but cut open to show the pupal case and the eggs. 



12. Several eggs, very greatly enlarged. 



13. Recently hatched larva, greatly enlarged. 



14. Cases of young larvae on twig, notice that the dark ones are on the dark bark 



and the light ones on the green bark, natural size. 

 \\a. Leaf eaten by young larvae, natural size. 



15. Older larvae in their bags which are ornamented with pieces of leaves, one is 



on the leaf, another hanging from the edge and a third dangling by a thread, 

 natural size. 



* Executed from nature, under the author's direction, by Mr L. H. Joutel of New York city. 

 364 



