22 
THE CHINCH BUG. 
Mr.Walsli in 18G1 mentioned four Ladybirds, viz, the Spotted Ladybird 
{Hippodamia maculata, Fig. 4), the Trim Ladybird {Coccinella munda , 
now called Cycloneda sanguinea, Fig. 5), and two species of Scymnus. In 
[Fig. 4.] 
Spotted Ladybird. 
[Fig. 5.] 
Trim Ladybird. 
1882 Prof. Forbes found five species of Ladybirds (including the first 
two mentioned by Walsh) extremely abundant on corn (15 or 20 to a 
hill) which was infested by hosts of Chinch Bugs. The contents of the 
stomachs of a few specimens of each were examined with the following 
results : In three specimensof Hippodamia maculata no traces of Chinch 
Bugs were found, the food consisting of the spores of lichens, the pollen 
of Bag-weed, and traces of Plant-lice. One-third of the food of Hippo- 
damia convergens (5 specimens examined) consisted of equal parts of 
Chinch Bugs and Plant-lice. In 4 specimens of Hippodamia glacialis 8 
per cent, of the food was found to be Chinch Bugs, 18 per cent. Plant- 
lice, and the rest vegetation. A single specimen of Coccinella 9 notata 
had eaten no insect food. Three specimens of Cycloneda sanguinea had 
eaten some Plant-lice, but no Chinch Bugs. From these observations 
Professor Forbes concludes that it is possible that the Ladybirds were 
attracted “ rather by the stores of fungi in the field thau by the Chinch 
Bugs and Plant-lice.” 
The Weeping Lace-winged Fly (Chrysopa plorabunda, Fitch) described 
originally by Dr. Shimer as Chr. lllinoiensis , has been found by Dr. 
Shimer to destroy the Chinch Bug. Professor Biley records the fact that 
the Insidious Flower Bug ( Triphleps insidiosus , Say., Fig. 6), an insect 
which is often found in company with the Chinch Bug and which has 
been mistaken for it, in reality feeds upon the pest. This is the insect 
which was .sent to Dr. Fitch as a Chinch Bug, and which he described 
as Anthocoris pseudochinche in his second report. Professor Biley also 
