2G3 



middle so that, together with the bifurcation of median facial keel, it 

 forms a small diamond-shaped area. 



Leiiiitli :^.<>inin. ; tegincn 4imii. 

 II;il>. Mowouii', Borneo. 



Borijslliriirs Stal. 



This genus, like Mundopa, has the siibcosta and radia sepa- 

 rated from near the base, the radia being furcate about the 

 middle and one or both branches again furcate near the apex ; 

 the media has three sectors, the first furcate near the apex. The 

 tegmina are ampliated on the hind margin beyond the clavus, 

 and when at rest these areas overlap and are not appressed as 

 in Mundopa Kinnara etc., Another feature which separates 

 this genus from Mundopa is the presence of a keel across the 

 gena below the antenna (subantennal keel) which touches the 

 edge of the face at its widest point, from which point the face 

 narrows to the apex. It is difficult to separate the species of 

 this genus without the help of the male genitalia. The toment- 

 osity on species of this genus mentioned by their describers is 

 due to waxy secretions and not to hairs or scales, and may be 

 present or absent. 



(1)5. certus sp. nov. ( 5 ) 



Head, thorax, legs and base of abdomen stramineous, rest of ab- 

 domen fuscous; tegmina hyaline, slightly fuscous, subopaque with 

 waxy secretion, veins brown on basal half, fuscous apically, infusca- 

 tion darker over apical cells and along base of subcosta, radia and 

 media, and over cross-veins; third apical median and first and second 

 apical radial cells each with a lighter spot. 



Male pygophor compressed laterally; ventral edge deeply and 

 roundly emarginate, a small, rounded, median process, slightly longer 

 than wide; on each side of the emargination the edges are produced 

 into a small, flat, spine above which on the right side the edge is 

 slightly produced, then straight for a short distance and then cut away 

 to the base of the anal segment, on the left side it is not produced but 

 nearly straight to the base of the anal segment; anal segment large, 

 anus near base, beyond which the segment curves under, the apex 

 being irregular. Styles asymmetrical, right one flattened, the apical 

 portion projecting nearly at right angle to basal portion, but in the 

 same plane, at the angle the inner edge drawn out into a small 

 point, the apex spatulate and rounded, the bent apical portion nearly 

 as long as the straight basal portion, a minute emargination on inner 

 edge near base, left style of the same shape as the right but the 



