23 
DISTRIBUTION. 
Leptoglossus oppositus is Austro-riparian in distribution, although it 
extends about halfway into the Carolinian region and sometimes even 
farther north, such occurrence, however, in the writer’s opinion, being 
rare and in some cases perhaps accidental. With recorded distribu- 
tion and the localities furnished during the year, we know that this 
species occurs in Georgia, Texas, Arkansas, Missouri, Indian Terri- 
tory, North Carolina, Virginia, Maryland, District of Columbia, Ken- 
tucky, Indiana, New York, and New Jersey. In the last-mentioned 
State it is recorded from Shiloh in September, and it was captured on 
Staten Island, New York, in October, by Mr. W. 'T. Davis. 
LIFE HISTORY AND HABITS. 
The life cycle.—TVhe life history of this plant-bug, as previously 
intimated, practically duplicates, as regards the length of the different 
stages, that of our two common species of Anasa, ¢77/st/s and armigera. 
Eges that were deposited in extremely hot weather in early August 
produced nymphs in eight days and the first molt of the nymph took 
place in three days. 
The nymphs do not thrive in confinement as well as do those of the 
species of Anasa, and the working out of the periods of the different 
stages would, therefore, have been laborious. Assuming the periods 
to be practically identical, we have the egg stage eight days, the first 
nymph stage three days, as previously ascertained, and can surmise 
the second and third nymph stages to be five to seven days each, the 
fourth five or six days, and the fifth seven or eight days, the minimum 
period of the entire life cycle probably being about five weeks, and 
the maximum seldom more than six weeks, except in the case of some 
ot the late broods which occur in the fall. 
As with Anasa, there is only a single generation produced each year, 
The first appearance of this plant-bug in the neighborhood of the 
District of Columbia is probably not far from the first day of July, 
the earliest date when it has been observed. This is two or three 
weeks later than the appearance of slnasa tristis. The first eggs ob- 
ained were deposited August 9. Nymphs were first seen August 13; 
the second stage, August 16. 
The first imagos of the new generation developed September 10, 
and during the next few days many more were seen both in our rear- 
ing cages and in the field. The hibernated bugs disappeared a week 
or two earlier, so that there was no overlapping of generations obsery- 
able. The second stage of the nymph has been observed during dif- 
ferent seasons as late as the middle of September and an individual of 
the third stage September 23. A belated adult was observed in the 
second week of November. 
