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. 



Hebriis 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, X. 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 antennae 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 (pi. 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 Money^vort, 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 (pi. X, fig. 4). 



Incubation. Eggs laid perhaps June 22 showed red eye spots by the 



