AMERICAN' SPECIES OE ARADUS (HEMIPTERA) 
Hoad loii^or tliaii l)n)ad (dd to d2), iiiuoli loiifior than pronotuin (3() to 2')); 
ty.his large, the sides ])arallel; impressions of vertex narrow, deeji, lunate, 
and widely separated; precjoular tulx'rcles distinet, moderately acute; an- 
tenniferous si)ines slender, acute, variably div^ergent, with small or obsoles- 
cent lateral tooth; i)ostocidar tubercles i)roniinent, acute; antennae (fig. 
IDc) slender, cylindrical, almost as long as head and i)ronotum together; the 
first segment reacdiing not (piite to middle of tyhis, the second in length equal 
to width of head imduding one eye; rostrum extending almost or quite to 
middle of mesosternum, Pronotuin (fig. Ihil) rather flat, the margins little 
reflexed, with coarse teeth anteriorly and fine denticulation posteriorly; 
carinae well elevated, the lateral ])air unusually long. Scutellum longer 
than pronotuin (3(1 to 25), at least as long as head, sides slightly curved or 
moderately sinuate, moderately elevated; apex acute or narrowly rounded; 
disc with low rounded elevation before middle, llem'elytra (d') extending 
to genital lobes, moderately narrowed, ex])osing connexivum, corium about 
to middle of fourth segment; ( 9 ) extending almost or (piite to dorsal genital 
segment, strongly narrowed, width at apex of corium equal to one-half width 
of abdomen, exposing a good deal of abdominal disc at sides, corium to or 
biwond apex of third; e.xocorium moderately expanded at base, evenly 
rounded, slightly reflexed; entire corium with numerous variable trans- 
verse veins; membrane narrowly rounded at ajiex; abdominal margin with 
small notches. 
Hrachyjiterous form. — Pronotuin very little modified, narrower but just 
as long, sides nearly straight, oblique, width greatest a little farther poster- 
iorly. llemielytra extending to apex of second abdominal segment at middle; 
corium normally broad at base, much reduced apically, the veins distinct; 
membrane very short, not extending beyond apex of corium ( 9 , Bergroth’s 
collection). 
cf (fig. li)b). Filth ventral .segment slightly shorter than sixth; genital 
.segment short, strongly convex, the lobes short; abdomen broadly oval, 
rounded iiosteriorlv. Length, (i to (l.l) mm. 
9 (fig. Ida). Length oi ilorsal genital segment more than one-half bivadth 
(IS to 30); ant('rior margin almost or (piite evenly curved, semicirevdar; 
posterior mai’gin curv(‘(l, truncate at middle; abdomen large, oval, rather 
Iiointeil iiosl.eriorly, much less than one-half broader than iironotum (SO to 
00). Length, 7 to 0.7 mm. 
1 ypp siK'pioK'ii, 9, (St. Arai'tin’.s I'dill.s, Albany River, Hud- 
son’s Ihiy) in tlu' British Museum. 
1 his species, as un(ler.st()()d here, is one of the most variable 
both in color and in didails of structure; it is to be recognized by 
the antennal and gmiilalic structure, and by the pronotal ehai- 
aclei ist ics, /. c., tlu' Hat suriaci', and the obliipu', usually sti'aight, 
anlero-lat(>ral margins, with coarse t(mth. In all but'the dark- 
est ioims I h(‘ pale aixais situatial postcu'iorly on the jironotum 
