17 



Indeed it is much to be desired that some rapid and easy mode 

 of applying some cheap insecticide to these larvte in the ground 

 may be invented, since where their injury is sufficient to compel 

 replanting, every worm in the field could be destroyed by the ap- 

 plication of a little kerosene or Paris green to the old hills of corn.* 

 Where the injury is not total it is easy to capture the worms by 

 hand without injury to the corn. As they lie secured by day in 

 the ground just beneath the surface immediately beside the corn, 

 they may be turned out of the earth by a motion of the finger, — 

 the webbed nest always serving to show their position, I do 

 not doubt that the labor of boys could very profitably be utilized in 

 this way, even in large fields of corn. 



2. The Sulphur Leaf Eolleu. 



(DlcJielia sulplmreana, Clemens.) 



Order Lepidopteea. Family Tortricid.e. 



[Plate I. Fig. 4.1 



The injuries to agriculture due to this species have been hitherto 

 insignificant in Illinois, as far as my observation extends, but as 

 they have attracted sufficient attention in other parts of the coun- 

 try to warrant treatment in the reports of the United States Ento- 

 mologist, and as I have found that they affect, to some extent, by 

 far the most important crop in Illinois, brief notice of them is evi- 

 dently desirable. 



LITERATURE. 



This species was first described by Clemens in 1860, in the Pro- 

 ceedings of the Philadelphia Academy of Sciences for that year, 

 page 353, as Croesia? sulfureana. In 1864 it was again described by 

 the same author in the Proceedings of the Entomological Society 

 of Philadelphia, under these additional names : Crcesia! fulvoroseana, 

 Croesia? virginiana, and Croesia? gallivorana, the form described 

 under the latter name having been received from Illinois. 



A more general description, including all under one specific name, 

 together with notes on distribution, is given by Piobinson in the 

 Transactions of the American Entomological Society for 1869, (Vol. 

 JI, p. 273). 



In the Report of Prof. Comstock for 1881, as United States En- 

 tomologist, was published the only elaborate article upon this species 

 which has yet appeared, he treating it especially as a clover insect, 

 describing the larva and pupa, giving an account of its life history 

 as indicated by his observations and breeding experiments, and 

 summarizing the facts known respecting its distribution. 



* Both the above considerations apply also to the wire worms in corn, since these are 

 likewise gathered wholly in the corn hills in infested fields. 



2 



