22 
THE CHINCH BUG. 
Mr. Walsh in 1SG1 mentioned four Ladybirds, viz, the Spotted Ladybird 
{Hippodamia maculata, Fig. 1), the Trim Ladybird (Coccinella munda, 
now called Cycloneda sanguined, Fig. 5), and two species of Scymnus. In 
[Fig. 4.] 
Spotted Ladybird. 
Trim Ladybird. 
1882 Prof. Forbes found five species of Ladybirds (iucluding 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 specimens of Hippodamia maculata no traces of Chinch 
Bugs were found, the food consisting of the spores of lieheus, the pollen 
of Bag- weed, and traces of Plant-lice. One- third of the food of Hippo- 
(lamia conrcrgens (5 specimens examined) consisted of equal parts of 
Chinch Bugs and Plant-lice. In 4 specimens of Hippodamia glacial ix 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 sanguined 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 than by the Chinch 
Bugs and Plant-lice." 
The Weeping Lace-winged Fly (Chvysopa plorabunda, Fitch) described 
originally by Dr. Shinier as Chr. lllinoiensis, has been found by Dr. 
Shimer to destroy the Chinch Bug. Professor Kiiey records the fact that 
the Insidious Flower Bug (Triphleps insidiosus, Say., Fig. G), an insect 
[Fig. 6.] 
[Fig. 7.1 
Insidious Flower-Bug. [Alter Riley.] 
Many-banded Robber. fAiter Riley, 
which is often found in company with the Chinch ling 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 ling, and which he described 
as Anthocoris pseudochinche in his second report. Professor Eiley also 
