New York AGRICULTURAL EXPERIMENT STATION. 261 
of this fly are laid on the body of the beetles. After hatching 
from its egg, the maggot eats its way into the body of the beetle 
where it proceeds to devour its host from within. The parasites 
undoubtedly cause the retarded development found in many of 
the beetles when dissected. 
Entomologists who have bred these parasites have always ob- 
tained but one species of fly; hence I assume that the maggot 
found by dissections was that of a fly called Celatoria diabroticae 
Shimer. 
Worms.— I am unable to find in any of the entomolegical 
writings, mention of the fact that a species of nematode, ‘ Kel- 
worm,” occurs as a parasite within the body of the striped beetle. 
Several beetles were found to have vast numbers of these parasites 
within their bodies. Whether this worm found by dissection 
within the bodies of the beetles is closely related to the trichina 
that infests swine and causes ‘ 
‘measly pork” or is related to the 
anguillule that infests plants, remains to be proven. As all the 
material was preserved simply for the dissection of the beetle, 
none of the worms were obtained in the best condition for micro- 
scopic study. 
REMEDIES. 
Although certain classes of agricultural paper writers have an- 
nually, for nearly fifty years, recommended various foul-smelling 
remedies which are warranted to keep the striped beetle away 
from cucumbers, squashes and melons, this pest continues to be as 
injurious as ever and seems to be constantly increasing in numbers. 
If the remedies which are warranted to keep the beetles away 
from the vines would do so, even though the beetles are not killed, 
there ought to be a decrease in their number; since, so far as is 
known, the beetles breed on no plants except the squash, melon, 
cucumber and plants closely related to them. 
POISONS. 
As shown under ‘“ Habits,” there are only two short periods 
during which the striped cucumber beetle can be actually killed 
