2H4 



bent apical portion much shorter and the spatulate apex slightly 

 larger. 



Length ^Jiiiiii. ; tegiuen 4.-imiu. 

 Hab. Telok Ayer, Borneo. 



(2) B. incertus sp. nov. ( S ) 



The color and marking of this species is nearly the same as certus 

 but the male genitalia differs as follows: Ventral emargination not 

 so deep, median process broader, the spines at the sides of emargina- 

 tion broader and shorter, the lateral edges project as broad angles, the 

 right much longer and more acute than the left; anal segment long, 

 anus about third from base, the apex pointed, turned downward 

 slightly and swollen; styles not so flat as in ccrtiif<, the apical portion 

 shorter and turned in an opposite plane to the base, the apical por- 

 tion on left side being pointed and curved, not spatulate. 



Length o.4nim. ; tegnien 5.2mm. 

 Hab. ]\Io\vong, Borneo. 



(^^) B. slmuJans. sp. nov. 



Color and marking as in certus but the hyaline spots larger. Ven- 

 tral edge of pygophor deeply emarginate, the median process thin and 

 spine-like, the sides roundly produced, forming a continuous curve 

 with the sides of emargination without any spines on edge; anal 

 segment large, anus near base, beyond anus broadened and flattened, 

 the apex drawn out and slightly spatulate, turned downward and 

 split down the middle, forming two contiguous processes; styles broad, 

 flat, apical portion curved slightly outward, rounded at apex, a round 

 emargination on inner edge near base. 



Length -jnim. ; tegmen 5nim. 



Hab. ^lowong, Borneo and Malay Peninsula. 



(4) B. magniis sp. nov. {$ 9 ) 



Clypeus, back of genae below eyes, scutellum, middle of pronotum 

 and all of abdomen brown, rest of body and legs yellow; tegmina 

 brown with white hyaline areas, costa and first branch of subcosta 

 red, other veins brown; the hyaline areas are a patch over basal 

 area, cut up by the brown veins, and nine or ten spots in the disk, 

 the spot in second radial cell continued as a fine hair-streak to near 

 apex; wings fuscous brown, veins dark with the darker color spread- 

 ing into the cells. 



Male pygophor slightly compressed laterally, medio-ventral edge 

 produced into an angular plate, the basal half narrowing slightly, the 

 apical half more acutely; lateral edges obtusely angularly produced; 



