no 
AGRICULTURAL REPORT. 
The Carolina tiger-beetle is about seven-tenths of an inch in length, 
of a most beautiful metallic blue, violet, and green ; and, when placed 
in certain positions, it assumes the lustre of bronze or gold. It may 
also be known by a yellowish curved spot on the extremity of each 
wing-case. It appears not to be so partial to the light of the sun as 
some other species, but often conceals itself under stones. It is also 
seen much more frequently in the cotton-fields during cloudy wea- 
ther, or toward evening, than in a fervid mid-day sun. 
THE PREDATORY BEETLE. 
( Harpalus ?) 
A beetle (PI. X. fig. 2,) belonging to the genus harpalus, is very 
beneficial to the cotton-planter, inasmuch as its food consists princi- 
pally of other insects, and of dead putrescent substances. Numbers 
of them may be seen running about the surface of the ground in 
search of food, and when disturbed, hide themselves under grass, 
roots, or stones. The formation of their jaws is peculiarly adapted to 
a predatory life. As they are very strong, and hooked at the ex- 
tremity, they are enabled to seize and hold fast any soft-bodied in- 
sect, which they generally kill and devour. 
It should here be mentioned, however, that the larvae of an insect 
of this species has been accused in Europe of feeding upon the pith 
and stems of grasses and succulent roots, but at the same time it is 
stated to feed also upon the larvae of other insects. 
Another very similar insect, ( Zabrus gibbus,) both in the larva and 
pupa state, is said to be injurious to wheat in Europe ; and although 
the two last mentioned may be injurious to vegetation, yet, as a general 
rule, the carabidae are carniverous, and destroy multitudes of insects, 
in the larva, pupa, and perfect state. 
THE DEVIL'S COACH-HORSE. 
( Reduvius novenarius.) 
This insect abounds (PI. X. fig. 3) in the city of Washington, 
during the summer and autumnal months, and is very useful in de- 
stroying the disgusting caterpillars which swarm on the shade-trees. 
The eggs are deposited in autumn upon branches, and are hatched in 
May or June. When young, the insects have abdomens of a bright- 
red color, with some dark or black spots on their backs. The 
head and thorax are black. When they shed their skins, they are 
greyish in color, and display only the rudiments ol wings. It is only 
in the last stage that they acquire perfect wings, when they are capa- 
ble of flying with great vigor. 
The perfect insect measures about an inch and a quarter in length. 
It destroys multitudes of noxious insects, in every stage of their 
growth, and is therefore highly beneficial ; but, at the same time, it 
is dangerous to man, if handled incautiously, as the punctures 
made by its piercer are often followed by severe consequences. When 
about to attack another insect, it advances towards its prey with a 
