THE SPOTTED BEET WEBWORM. \) 
Evidently this and other species of flea-beetles, or at least many of 
them, are in the habit of feeding to some extent in sunshine as well 
as in shade. 
In regard to remedies for the spinach flea-beetle, while conducting 
some experiments in July, 1912, F. H. O'Neill, student assistant, 
spraying for cabbage butterflies and honey bees, 1 to see if sweetened 
and poisoned substances would kill any of them, observed that a 
mixture of arsenate of lead used at the rate of 6, 12, and 25 pounds, 
and similar amounts of molasses, to 100 gallons of water, did not 
destroy the butterflies or bees, but about 60 dead individuals of this 
flea-beetle were counted beneath the radishes July 16. The flea- 
beetles were not in particular evidence during these days ; but they 
had " peppered " the beets with the usual small holes and must, 
therefore, have been abundant about the roots of the plants and come 
up to feed on the leaves, to their very swift undoing. It was not 
expected that the poison would kill either the butterflies or the honey 
bees which were present, and these were practically all unharmed. 
THE H AAV All AN BEET WEBWORM. 
(Hymenia fascialis Cram.) 
In a single instance the Hawaiian beet webworm (Hymenia fascia- 
lis Cram.) was reared from Swiss chard with the spotted webworm 
at Washington, D. C. Moths issued on October 7. The chard is a 
new food plant. The species is recorded by Marsh as attacking table 
and sugar beets, stock beets or mangel-wurzels, and several species of 
Amaranthus, Euxolus, purslane (Portulaca oleracea), cucumbers, and 
chenopodiaceous weeds. The moths of the two species are shown, for 
comparison, in Plate IV. 
NATURAL ENEMIES. 
On several occasions during October the last two stages of the 
nymph of the spined soldier-bug (Pod/sus maculiventris Say) were 
observed attacking the larvae of the spotted beet webworm. This 
was the only predaceous insect observed, although there are probably 
several others. 
The same is true of the parasitic enemies, a single one being noticed, 
a small braconid, Hemiteles sp. (Chttn. No. 2194°). This latter 
was reared October 7. 
The very closely-related Hymenia fascialis has several parasites, 
and the probabilities are that if the present species were studied more 
carefully in other regions a number of other natural enemies would 
These experiments were made at the request of correspondents. 
