hungerford: aquatic hemiptera. 87 



"Hebrns pusillus Fuscus. Base of antennae and legs fulvous, basal 

 region of elytra obliquely elongate and membrane with three white spots. 

 Length, % line. 



"In specimens from Pennsylvania, the entire body, especially the head, 

 is reddish-brown, the scutellum somewhat prominent, the sides of abdo- 

 men parallel, thence behind as broad as in front, then rounded off. The 

 ocelli very distinct." 



Locality: New Hampshire, Massachusetts, New York, Pennsylvania, 

 Illinois. 



Hebrus sobHnus Uhler 1877. 



Uhler, Bui. U. S. G. G. Seiirv., Ill, p. 452, 1877. 



"Robust, brunneo-fuscous, beneath mostly blackish-piceous, with the 

 sternum, coxae, and legs testaceous. Head stout, not so long nor as taper- 

 ing as in H pusillus Fallen; the vertex and face very convex, at the tip 

 thickly hairy. Antennae dull testaceous, pubescent; the basal joint 

 thickest, narrowed at base, longer than the second; the third longest, 

 slender, of the same thickness as the succeeding ones. Under side of the 

 head and bucculce dull testaceous; the rostrum slender, reaching upon the 

 venter, dull testaceous. Eyes dark brown, with few and coarse facets. 

 Pronotum broader than long, flattened ; the humeri well defined by a brown 

 sulcus; impressed line between the lobes distinct, as also the three in- 

 dentations upon the center, those each side less distinct; the surface very 

 minutely punctate. Pleurae darker, having a few, very remote, coarse 

 punctures. Venter smooth, black-piceous, densely sericeous pubescent, 

 margined with dull fulvous. Hemelytra pale brownish, minutely pubes- 

 cent; the nervures thick, darker; the costal margin almost straight, a 

 little incurved near the tip; membrane scarcely reaching the tip of the 

 venter, pale, dull brown, slenderly margined with paler brown. Tergum 

 fuscous, whitish, sericeous pubescent, the reflexed margins yellow. 

 Length, scant 2 mm. Width of base of pronotum, % mm. 



"A few specimens occurred on margins of ponds west of Denver." 



Localities: Colorado, Arizona, California. 



Hebrus concinnus Uhler 1894. 



Uhler, Proc. Zool. Soc, London, p. 221, 1894. 



"Form of H. pusilbis Fallen. Fuscous or rust-brown above, minutely 

 pubescent, with the disk of pronotum moderately flat and the cbllum 

 well defined and fulvous. Head nearly as long as pronotum, dark 

 brown, minutely scabrous, tinged with rufous at tip; antennae dusky 

 testaceous, sometimes fuscous on the tips of the two basal joints, the 

 first of these a little longer than the second, generally paler at the 

 base, the three following ones very slender, set with erect pubescence, 

 the third longer than either of the following ones, the fourth and fifth 

 subequal; underside of head and the bucculse testaceous; the rostrum 

 pale testaceous, reaching to the posterior coxae. Pronotum with a de- 

 pressed, curved, rufous margin extending a little over the base of the 

 scutellum; the lateral margins notched behind the swollen anterior lobe; 

 the humeral angles prominent, rounded, with a callous long submargin; 

 the middle line impressed, and each side of it with a few coarse punc- 

 tures anteriorly and with a group of less coarse ones posteriorly; the 

 reflexed lateral margin and underside of collum rufous. Scutellum dull 

 fuscous, rough and uneven; legs testaceous, a little dusky on the knees, 

 tibiae and tarsi. Hemelytra scarcely longer than the abdomen, obscurely 

 sericeous pubescent, pale smoke-brown at base, fuscous at tip, with a 

 stripe of white running out from the base of the clavus, and a longer 

 pale streak on the subcosta4 long areole; the membrane pale fuscous, 

 with a pale spot each side next the cuneus; the margin of the entire 

 wing coverts, including the membrane, also pale next the tip; there is 

 in some specimens a faint trace of another spot. Venter polished, fuscous 



