40 ^\\. Vx. Shelf. .r<l on sovte 



castancons marking like nu iuvcitcd W on the disk, a central 

 testaceons line. Teirniina abhicviatod, not extcndinj; nnicli 

 bryond tlio second abdoniinal tcrijitc, snifacc rcticnlatc, anal 

 vein reachinp; internal posterior nnfrle of tcfjmina. Wings 

 rndimcntary. The first and second abdominal tergites tlavo- 

 testaeeons, third to fifth flavo-testaccous with castaneons 

 lateral and posterior borders: sixth rufo-eastaneous, enlarged; 

 seventh flavo-testaeeous with central castaneons macula, 

 narrow, ])osterior margin sinnate and slightly eraarginate in 

 the middle; supra-anal lamina quadrate, broadly eniarginate, 

 rnfo-castaneous with a testaceous macula at the postero- 

 lateral angles. Cerei black, apices rufo-eastaneous. Abdo- 

 men beneath rufo-castaueous, lateral margins castaneons and 

 a castaneons stigma on second to fourth steruites ; sub- 

 genital lamina notched on each side, the long slender styles 

 springing from the notches. Legs rufo-eastaneous. Meta- 

 tarsus scarcely equal to remaining joints, spined beneath, 

 its pulvillus minute. 



? . Head black ; ocelli, clypeus, genae, vertex flavo- 

 tcstaceous ; antennae rufo-castaneons. Pronotum as in (^ , 

 but the discal black marking much enlarged, so that it 

 occupies all the disk, leaving only a narrow sinuate flavo- 

 tcstaceous margin, no central testaceons line. Tegmina 

 squamiforra, not extending beyond metanotum, black, with 

 a yellow line at base ; mesonotum, metanotum, and first five 

 abdominal tergites black, Avith a broad central transverse 

 fiavo-testaccous band ; sixth tergite enlarged, coucavely 

 depressed, black with flavo-testaeeous lateral and posterior 

 margins ; seventh tergite somewhat triangularly produced, 

 black, apex slightly emarginate, flavo-testaeeous ; supra-anal 

 lamina produced, narrower than in <?, broadly emarginate. 

 Abdomen beneath and legs black, disk of abdomen rufo- 

 eastaneous; coxse margined outwardly Avith flavo-testaeeous, 

 tibial spines and tarsi castaneous. 



J . Total length 21 mm. ; length of tegmina 10 mm. ; 

 pronotum .o'8 mm. x 7'2 mm. 



$ . Total length 26 mm. ; length of tegmina 4 mm. ; 

 pronotum 8 mm. x 10 ram. 



South of Lake Rudolph, Brit. E. Africa {Maurice de 

 Rothscliild, V3Q')) ; five examples (Paris Museum). 



The nearest ally of the species appears to be B. nianca, 

 (icrst., from W. Africa. 



