HUNGERFORD: AQUATIC HEMIPTERA. 85 



"Color: General color reddish-brown or dark reddish-brown. An- 

 tennae testaceous, the apical segment infuscated. Legs testaceous, the 

 apical segment infuscated (claws excepted.) Abdomen beneath blackish, 

 border with reddish-brown: Hemelytra white, the dusky patches eva- 

 nescent. 



"Brachypterous form. Head and antennal characters agree with the 

 macropterous form. Prothorax less constricted on the sides, the humeri 

 less prominent, the disc with a shallower median, longitudinal groove. 

 Scutellum broader. Connexivum very broad. Wing pads vary in size, 

 but usually very small. 



"Color: General color, reddish-brown. Wing pads white. Legs and 

 antennae agree with long winged form." 



"Numerous examples, taken at various times during the summer at 

 Hebron (Licking Co.), Sugar Grove and Rockbridge (Hocking Co.), Dela- 

 ware (Delaware Co.), Columbus (Franklin Co.), and Ira (Summit Co., 

 one specimen only.)" — Drake. 



Genus HEBRUS Curtis 1833. 



Description of Genus. Head pointed and elongated in front. Eyes 

 small, globose, not prominent. Ocelli very distinct, placed on the posterior 

 line of the eyes and near them. Antennas five-segmented with short ar- 

 ticulations between the second, third and fourth. Rostrum four-seg- 

 mented, the first two very short, third and fourth long, tip reaching to 

 the third pair of coxae. Rostral chamber wide, sides raised posteriorly, 

 end in a point projecting a little over the prosternum. 



Pronotum deflected, hexagonal, broader than long; anterior margin 

 incrassated; sides widely divergent to the rounded and prominent hinder 

 angles, but deeply constricted before the middle; hinder sides rounded; 

 posterior margin straight; disk in the middle with a short, broad, longi- 

 tudinal channel, of which the sides are somewhat bluntly raised, on each 

 side of it anteriorly, a deep fovea, whence a depression extends to the 

 anterior angles; hinder portion flat, convex, higher than the anterior 

 part. Scutellum short, broad, reversed trapeziform, posteriorly raised, 

 concave, with a central longitudinal keel. Elytra very broad posteriorly; 

 corium on its anterior margin not half the length of the elytron, on the 

 inner margin shorter; posterior margin straight, oblique; the breadth is 

 about half that of elytron, anterior and inner margins with an incrassated 

 nerve; the region of the clavus wide, membranous, posteriorly not per- 

 ceptibly separated from the membrane ; membrane very broad, thin, with- 

 out perceptible nerves. Wings with one triangular, basal cell, and one 

 nerve at its end. Sternum flat, with a wide rostral channel. Legs stout, 

 posterior femora curved, on each segment of sternum very wide apart, 

 widest on the third; tarsi three-segmented; first very small; second 

 longer, stout, the end oblique, clasping £lie third which is long, stout, 

 thickest at the end, rugulose and hairy, with two very short curved claws; 

 the second and third segments are so closely united as to appear to form 

 but one long ovate segment. 



Abdomen convex beneath but flattened in middle, apex rounded, con- 

 nexivum narrow. Genital segments not visible from above, beneath pro- 

 jecting through a circular opening in the last abdominal segment; in 

 the two, the first short, annular, the second at base cylindrical, but then 

 rapidly narrowed to a point, which is curved upwards. In the three, the 



