X[ 
cessive abundance during both years covered by this report of 
an injurious grass insect, Crambus camureflus , which did 
noticeable damage to lawns; and the first report of the arrival 
in the State of the notorious horn-fly, which since its advent 
from Europe had been confined to eastern localities. 
The clover seed midge (Cecidomyia leguminicola ), was found 
abundant in 1891 and 1892 throughout the northern half of 
the State, from Ogle county to Champaign, and it is very 
probably still more widely distributed. 
Specimens of a large flea-beetle, Bisonvcha pennsvlvanica , 
sent me from Griggsville, in Pike county, with the information 
that they were injurious to apples, were confined under a bell 
■ jar with „cut pieces of apple, upon which they fed very freely. 
They were, however, proven by experiment to be entirely unable 
to bite through the skin of uninjured fruit. In the numbers 
in which they were found at Griggsville, hibernating in the 
I &ppls orchard under bark, and especially under bands used as 
traps for the codling moth, they might easily do considerable 
injury by gnawing and hollowing out specked" apples upon the 
trees. 
