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The valorous wasp (Polistes bellicosa Or.). This species builds its 
uests iu the old worm-fences inclosing cotton and corn fields. Many 
specimens were observed carrying off small rounded white particles, 
composed evidently of the chewed-up fragments of some larva. 
The potter- wasps of the family Eumenidae build cells formed of clay, 
or clay and sand mixed, attached to twigs or leaves, or occupy the old 
deserted cells of other wasps and bees. These they fill usually with 
lepidopterous or coleopterous larvae, which they first paralyze with 
their powerful sting, for the subsistence of their young. 
Three species were not uncommon flying about the cotton : The four- 
toothed potter wasp (Monobia quadridens Linn.) was frequently seen to 
carry off cutworms, and probably preys upon the cotton worm and boll- 
worm. Odynerus conformis Sauss. and O.fulvipes Sauss. were also cap- 
tured preying upon small lepidopterous larvse. 
There can be no longer any doubt of the important role played by 
many species of ants in the destruction of some of our more injurious 
insects, and while it is doubtful whether all of the species recorded 
below will attack and destroy large and vigorous caterpillars, most of 
them do, however, destroy those which are diseased or injured, as well 
as immense numbers of fresh pupae and eggs. The species taken and 
observed by me were as follows : 
The Pennsylvania wood ant (Camponotus pennsylvanicus DeGr.). 
Observed only on low damp places contiguous to a wood, and never 
found in the middle of the fields or on high dry soil far away from 
timber. It is doubtful whether it ever attacks caterpillars. 
The chestnut-colored ant ( Camponotus castaneus Latr.). Occasionally 
seen with the former, but no observations on its habits were made. 
The honey-yellow ant ( Camponotus melleus Say.). Common in several 
fields, the formicaries being built in the ground, but although common 
on the cotton, running up and down the stems and over the leaves, I 
never discovered upon what it fed. 
The coal-black ant (Monomorium carbonarium Smith). Twice observed 
feeding upon the pupa of the cotton worm and once on the boll worm. 
I first observed these ants August 11 destroying an Aletia pupa which 
had webbed up on a leaf of the cocklebur. It was fairly covered 
with from 40 to 50 individuals, and I have no reason to believe the 
chrysalis was injured before the ants attacked it. 
The grooved-faced ant (Solenopsis geminata Fabr.). August 3 I took 
numerous specimens feeding on the pupa of a bollworm, and August 
14 it was observed destroying the eggs of this same moth. 
Only three species belonging to the family Proctotrypidse were taken, 
viz., Goniozus platynotoi Ashm., a parasite on the cotton leaf-roller, 
Platynota sentana; Ceraphron sp., and Anopedias sp. The last two are 
probably parasitic on some cecidomyiid larva found on cotton. 
A small black cynipid belonging to the genus Hexaplasta and closely 
allied to S. zigzag Riley, a common parasite on Phora aletice Comst., 
