546 APiD.i;. 



c. Pubescence on 2nd abdominal segment 

 hoary or ochraceous white. 

 a' . Abdominal segments 3-5 with ochra- 

 ceuus-white pubescence, the bases of 

 segments with transverse black pubes- 

 cent fascifB B. personalus, p. 548. 



b' . Abdominal segment 3 with black, 4 and 



5 with orange-red pubescence B. tunicatus, p. 549. ^ 



B. Mesonotum without a transverse band of 

 pubescence, differently coloured to rest of 

 pubescence on thorax. 

 a. Pubescence on head, thorax, and abdomen 

 all of one colour. 



a'. Pubescence blac;k B. e.vimins, p. 549. 



h'. Pubescence yellow B. Jlavescens, p. 550. 



h. Pubescence on head, thorax, and abdomen 

 not all of one colour. 

 a. Apical two or more abdominal segments 

 with black pubescence. 

 a^. Pubescence on 3rd abdominal segment 

 fuscous brown or black. 

 a^. Pubescence on thorax yellow .... B. melanurus, p. 550. 

 b^. Pubescence on thorax fuscous 



brown B. nssumensis, p. 550. 



b'^. Pubescence on 3rd abdominal segment 



fulvous B. andamcmus, p. 551. 



b'. Apical two or more abdominal segments 

 with grey or hoary-white pubescence. 

 a^. Pubescence on 2nd abdominal seg- 

 ment bright fawn-colour B. atrocinctus, p. 551. 



b"^. Pubescence ou 2nd abdominal seg- 

 ment silvery grey, narrowly black 



along base B. funerarius, p. 551. 



c^. Pubescence on 2nd abdominal seg- 

 ment black. 

 a^. Pubescence on thorax above rich 



fulvous red B. terminalis, p. 552. 



¥. Pubescence on thorax above hoary 

 or ochraceous white. 

 «*. Pubescence on 1st abdominal [p. 552. 



segment pale yellow B. Jlavothoraciciis, 



b^. Pubescence on 1st abdominal 



segment black B festivus, p. 553. 



c'. Apical two or more abdominal segments 

 with yellow or red pubescence of some 



shade. [p. 552. 

 d^. Pubescence on thorax silvery grey . . B. funerarius, var., 

 6^. Pubescence on thorax ochraceous or 

 yellow. 

 a^. Pubescence on 3i'd abdominal seg- 

 ment vermilion-red B. ininiatus, p. 553. 



b^. Pubescence on 3rd abdominal seg- 

 ment brown B. vallestris, p. 553. 



c^. Pubescence on thorax black. 



a^. Pubescence on 3rd abdominal seg- [p. 554. 



ment bright rufo-fulvous B. keemorrhoidalis, \/ 



