HUNGERFORD: AQUATIC HEMIPTERA. 87 
“Hebrus pusillus Fuscus. Base of antennze and legs fulvous, basal 
region of elytra obliquely elongate and membrane with three white spots. 
Length, %4 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 sobrinus Uhler 1877. 
Uhler, Bul. U. S. G. G. Seurv., III, p. 452, 1877. 
“Robust, brunneo-fuscous, beneath mostly blackish-piceous, with the 
sternum, coxe, 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. Antenne 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 buccule 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. Pleure 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, 4 mm. 
“A few specimens occurred on margins of ponds west of Denver.” 
Localities: Colorado, Arizona, California. 
Hebrus concinnus Uhler 1894. 
Uhler, Proce, Zodl. Soe., London, p. 221, 1894. 
“Form of H. pusillus Fallen. Fuscous or rust-brown above, minutely 
pubescent, with the disk of pronotum moderately flat and the collum 
well defined and fulvous. Head nearly as long as pronotum, dark 
brown, minutely scabrous, tinged with rufous at tip; antenne 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 buccule testaceous; the rostrum 
pale testaceous, reaching to the posterior coxe. 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 
refiexed lateral margin and underside of ccllum rufous. Scutellum dull 
fuscous, rough and uneven; legs testaceous, a little dusky on the knees, 
tibiz 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 subcostal 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 
Im some specimens a faint trace of another spot. Venter polished, fuscous 
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