4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 119 



Hemelytra abbreviated, mder than pronotum; membrane reduced 

 to a narrow rim at tip of corium interiorly; clavus not discernible; 

 exocorium strongly developed, outer border arcuate, finely crenulate; 

 posterolateral borders of main corium simple, not crenulate. 



Abdomen ovate, slightly longer than width across segment V 

 (70:67). Lateral borders finely crenulate, widely rounded; postero- 

 exterior angles II to V not protruding, VI slightly protruding, VII 

 almost forming a right angle. Connexivum wide, densely granulate, 

 its limit with tergum rather blurred. Tergiim flat, sUghtly convex 

 medially; limit between terga VII and VIII clearly defined medially, 

 almost indistinguishable laterally. Lobes of VIII large, pincer- 

 shaped, sm-rounding small tergum IX, but not contiguous at tips. 

 Tergum IX reaches middle of lobes. 



Color. — Testaceous; occiput, and postero-exterior angles of con- 

 nexiva II to VII, pale reddish brown, almost whitish; outer borders of 

 connexival segments in front of postero-exterior angles brown; head 

 and pronotum ferruginous. 



Measurements. — Total length 5.2 nmi.; width of pronotum 1.64 

 mm.; width of abdomen 2.68 mm. 



HoLOTYPE. — Female, Onaga, Kans., Crevecoem- collector (USNM 

 type 67581). 



Aradus ovatus, new species, is related to A. montanus Bergroth but 

 may be separated by the following characteristics: antennal segment 

 III two-thirds as long as II ; middle and outer carinae of the pronotum 

 obsolete; pronotum widest far behind middle; size much smaller; 

 and by color. 



Aradus barberi, new species 



Figure 4 



Male. — Elongate ovate, macropterous. 



Head shghtly longer than width across eyes (25:23); distance 

 between the eyes less than length of antennal segment II (15:22.5). 

 Anterior process long, slightly enlarged medially, produced beyond 

 tip of antennal segment I. Antenniferous tubercles dentiform, 

 acute, divergent, lateral tooth distinct. Eyes very prominent, 

 kidney shaped. Preocular tubercles small, acute; postocular tuber- 

 cles prominent, blunt. Depressions of vertex deep, slightly convergent 

 backward, connected posteriorly. Antennae long, slender, less than 

 twice as long as head (47:25). Proportions of antennal segments 

 5.5:22.5:9:10. Rostrum reaching to foreborder of mesosternum. 



Pronotum less than half as long as width across humeri (19:43). 

 Anterior border straight, anterolateral angles produced forward, 

 subangular. Lateral borders sinuate and reflexed anteriorly, strongly 



