16 
To destroy a first brood in bearing fields, it will of course be 
necessary to use means which will not injure the fruit. The only 
insecticide which it will be proper to employ under these circum- 
stances is pyrethrum, and it is not certain that this would be effec- 
tive, aS no experiments have been made upon this precise species. 
I have found it sufficient, however, for the destruction of the rose-slug 
(Selandria rose, Harris), a species closely allied to that under con- 
sideration. Further than this, I know of no feasible remedy, except 
hand picking, or capture with an insect net. As the larve are 
easily startled, and drop to the ground when alarmed, it is not im- 
possible that they might be swept from the vines with a net, and 
destroyed by emptying them into a pan or bucket containing a film 
of kerosene upon water. 
If the fruit-grower should be watchful enough to detect the flies 
in early spring, as they frequent the vines for the purpose of deposit- 
ing their eggs, it is quite likely that he might protect his fields by 
using the insect net to capture them, in the cool of the day, when 
they are sluggish, and slow to take flight. 
To destroy the second brood, where it occurs, or the first in young 
fields not yet in bearing, or where the crop itself has already been 
ruined, Paris green or London purple will be found efficient, accord- 
ing to the observations of Prof. Osborn reported in the Transactions 
of the Iowa State Horticultural Society for 1852. Hellebore would 
doubtless prove equally effective, as this is the general specific for 
all saw-fly larve. It is further quite likely that mowing and burn- 
ing the fields, as for the leaf-roller, would likewise serve for the 
extermination of the second brood of this species. 
THe Rosz Stua, (Selandria rosae, Harris.) 
Order Hymenoptera. Family Tenrarepinipm. 
This species is mentioned here only to call attention to the fact 
that it has been reported by Mr. Townend Glover,* formerly United 
States Entomologist, to attack the strawberry when its ordinary 
food fails. 
THE Brown STRAWBERRY Span- Worm. 
(Cymatophora pampinaria, Pack.) 
Order Lermoprera. Family Poaumnipm. 
This species was found by us in midsummer so frequently, feed- 
ing upon the leaves of the strawberry in Southern Illinois, as to 
make it worthy of brief mention here. It is a slender looping 
caterpillar, brown in general color, about an inch in length, 
and gives origin to a gray moth which expands from three-fourths 
*Prairie Farmer, October 5, 1867, Vol. XX, p. 212. 
