02 
AMERICAN SPECIES OF ARADUS (HEMIRTERa) 
9 27:i). Dorsal i^eiiital scgiuont much wider than lonij (If) to 10), 
its posterior iiiaigin slif>;htly curved, straight just at middle. Length, O.f) to 
(i.7 mm. 
d’yix' spt'ciiiiens (Alal)tinui) in Hergroth’s collection. 
'riiis species is distinct in most of its characters, esitecially 
in color, shape of abdomen (broad in both sexes), and genitalic 
strnctnre, while exhibiting somewhat remote relationships with 
prohoHcidcus and sivdlis, as Bergroth remarks. It ap]tears to have 
b('(Mi found on one occasion only, as the seven or eight specimens 
existing in collections liear identical data. 
28. Aradus (Aradus) parvicornis sj). nov. (Plate III, fig. 2S.) 
Description . — Dark brown; jiosterior iiortion of pronotum between carinae, 
apical half of scutellum, and veins of inner half of corium, dull reddish yellow; 
membrane whitish hyaline; first antennal segment and ajiices of second and 
third inconspicuously jiale; eonnexival segments reddish brown, each outlined 
on I hree sides w ith a strongly elevated, dark, granular ridge, the extreme apical 
angles dull yellowish; rostrum brown, jialer toward base; legs brown, troch- 
anters and apices of tibiae pale; ventral surface rcdilish brown with rather 
cons])icuous paler markings. 
Head a little longer than broad (2() to 24), much longer than iironotum 
(2() to 20); tylus rather large, somewhat fnilbous; impressions of vertex 
narrow, dee]), parallel, close to eyes; ])rcocular tubercles distinct, moderately 
acute; antenniferous si)ines very short, conical, moderately divergent, with- 
out lateral tooth; ])ostocular tubercles distinct, obtuse; antennae (fig. 2Sc) 
(‘xtnaiK'ly small, scarcely longer than head alone (fourth segment missing, 
probably as long as third), the first segment scarcely reaching basal third of 
tylus, hmgth of second less than distance between eyes (12 to Ki); rostrum 
extending not (piite to base of prosternum. Pronotum (fig. 2Sd) strongly 
convex, with sharp trairsverse dei)ression; lateral margins narrowly ex])lanate, 
not reflexed, with coarse, irregular, long, blunt teeth; carinae well elevated. 
Scutellum (fig. 2Sd) broad, slightly shorter than heail (25 to 2(1); basal 
ek'vation most pronouncc'd at angles, with a narrow median longitudinal 
Carina; sides modc'rately elevab'd. llemielytra (9) modi'rately narrowed, 
exposing disc of abdomen slightly at sides, extending a little be 3 'ond base of 
dorsal g('nital segment; corium to base of fourth; basal ('X])ansion of ('xo- 
corium very moderate, elongate; nuxsocorium and endocorium with numerous 
moderatelv distinct cross-veins. 
cf. Inknown. 
9 (fig. 2Sa). Posterior margin of dorsal genital segment veiw slightlv 
emarginate in middle' third, straight and slightly obliepie (‘acli side; gx'iiital 
lobc's, as seen from above, extreme'ly short., their greatc'st length (lu'ar inner 
margin) about eejual to one'-fourth transverse width; abdomen oval, about 
one-third broader than pronotum ((10 to 4(1), side's evenly reumdeel, witheeut 
|•rcmJlat ion. Le'iigth, fe.S mm. 
'rn,\.\.s. .\.M. |.;.\T. se)e'., xnvii. 
