154 
grass or clover, and fall plowing, whenever it can.be done without detri- 
ment to the fields. What has, or is likely to Jbe accomplished by the 
use of fungoid parasites. I do not know. The opinion of our presiding 
officer, who is experimenting in that direction, will be of interest to us 
all. As in the case of the Corn Eoot-louse. Aphis maidis Fitch, or 
Aphis maidi-radicis Forbes, less injury is done in fields that have been 
fertilized with barnyard manure. 
The Corn Eoot- worm, Diahrotica longicornis Say, has by its ravages 
cost the farmers of the Mississippi Valley millions of dollars during 
the last fifteen years, every penny of which might have been saved by 
a judicious system of husbandry. Every member of this association, 
located in the infested area, has again and again sounded the alarm 
and announced the remedy, yet I fear there are some who have not heard 
it. In Ohio it is unknown, except along the western border of the 
State. Its occurrence here, where it was reported last year for the 
first time, raises the question of its eastward diffusion — a problem which 
I hope to be able to solve. The congenor of this species, the Southern 
Corn Eoot worm. Diahrotica 12 punctata Oliv.. will certainly not be 
managed so easily. There is yet some investigation to be done on this 
species, before we can confidently advise in regard to its destruction. 
It appears, in the adult stage, to be well-nigh omnivorous, and the 
larva? travel freely. 
The Corn or Boll Worm Heliothis armiger Hbn.. is more especially a 
Southern species, though as far north as Chicago, there are during 
some seasons two broods, as. in that portion of Illinois, I have found 
half grown larva? in the ears of ripe corn, in Xoveinber. In the Xorth 
the damage done is trivial, often being due to the rain and dew running 
into the affected ears, causing them to decay. Among the market 
gardeners, where it works in the sweet corn, the measure suggested 
by Prof. French, several years ago. which was late plowing in the fall, 
will do much to hold the species in check. In the South the most sen- 
sible and practical suggestion that I have seen mentioned is to plant 
corn early among the cotton in order to attract the early brood of 
worms, and then destroy the corn in a way to kill the depredators. 
For the major portion of the cutworms, I have much faith in laying 
down of poisoned grass or clover baits, but the larva? of Hadena devas- 
tatrix Brace and H. stipata Morris, can not be reached in this manner, 
as they do not come to the surface to feed. The first eats the plants 
directly off a short distance above the roots, while the last eats into 
the stem at about the same place, then tunnels its way upward, eating 
out the heart after the manner of the Stalk Borer, Rydrcecia nitela Gn. 
I have here to introduce a third species of Hadena, H. fractUinea 
Grt., and an entirely new depredator in our cornfields, at least so far 
as published records are concerned. In fact we rarely find the species 
mentioned at all in our entomological literature. The imago was de- 
scribed in the Canadian Entomologist (vol. VI. p. 15, January, 1874), 
