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HUNGERFORD: AQUATIC HEMIPTERA. 89 
adults, in November and also thawed adult females from ice in January. 
He has taken nymphs and adults in July and August, and notes that the 
nymphs lack ocelli. 
Kirkaldy found this among Lemna and Sphagnum. Bueno reports 
having taken H. concinnus on the damp edges of a cranberry bog on Long 
Island and at White Plains on the muddy bottom of a dried up temporary 
pool. 
Hebrus cincinnus Uhler. 
Habitat. This little species was found among the moss tufts and grass 
clumps and upon the moist earth of the shores of an upland meadow pool 
at Ringwood Hollow, near Ithaca, N. Y. It was also taken about the 
waters of the cove just east of the field station. It is an inconspicuous 
shore bug that frequents the moss and will be taken only when, dis- 
turbed in its haunts, it takes to the open areas, even venturing upon the 
water for a short run. These insects are not as safe upon such a footing 
as are the little Microvelias which they superficially resemble. Their 
bodies are sufficiently covered with a fine pile so that, if perchance 
they do capsize, they have a fair chance of escape. On one occasion a 
specimen in the laboratory became submerged accidentally. It walked 
upside down under the surface film as upon a ceiling, stopping now and 
then to clean the antenne and limbs as it frequently does when in its 
normal environment. The body was surrounded by a layer of air which 
held it up to the surface film. It finally escaped by crawling upon a bit 
of moss projecting from the water. 
Mating. The first adult Hebrid was taken by Mr. C. H. Kennedy on 
June 4, at Ringwood Hollow. On June 22 the bugs were mating in 
numbers. The male mounts the female and remains in copula for vary- 
ing periods of time. 
Oviposition. Bugs brought to the laboratory on June 22 were con- 
fined in large petrie dishes. These petries were prepared for them by 
placing some moist sand in the bottom and adding a few sprigs of moss. 
One June 26 the moss was examined superficially under the binocular 
and no eggs discovered. A more careful examination with dissecting 
needles revealed some of the yellowish white eggs, already showing the 
red eye spots, hidden between the closely approximated leaves. Some 
of them seemed to lie on the upper concave side beneath the pale green 
sheath of the moss leaf, as: shown in the figure (pl. X, fig. 4). For the 
most part they were concealed as shown in figure 2 between the leaf 
and the stem. 
In an endeavor to determine whether the female would ever place the 
eggs in the tissues of plant stems, some females were confined in a small 
stender dish with a leaf of Moneywort, a soft stem of dead sedge, and a 
variety of moss having the leaves widely separated and directed outward, 
thus providing no hiding place for the eggs. Eggs were laid in the mat 
or tangle of rootlets at the base of the moss, and, in one instance, the tip 
of one leaf was glued to the one above it and here three eggs were found, 
as shown in the sketch (pl. X, fig. 4). 
Incubation. Eggs laid perhaps June 22 showed red eye spots by the 
