BACCHA 



]21 



2 . Frons rather broad, grey, callosity above antennae shining 

 black, oblong, nearly reaching from eye to eye ; upper part of 

 frons shining black, reaching from tlie vertex nearly to the cal- 

 losity. Abdomen black ; 2nd segment with a vertically elongated 



Fig. 2'5, — Baccha rohusfa, Bnin,, abdomen. 



pale spot on each side, the spots nearly meeting in the centre on 

 the fore border; 3rd and 4th with a transverse hoary yellowish- 

 grey oval spot on each side, nearly on the fore border ; 4th seg- 

 ment with brown posterior border; last segment brown. 



Length, 10-12 mm. 



Described from six S <S and four $ $ in the Indian Museum 

 collection, from Mergui, including types {Doherty). Darjiling, 

 1000-3000 h.{Lord Gartni-luul's ollr.)-, Tenasserim Valley; base 

 of Dawna Hills {AaaandaU). it appears to be fairly widely dis- 

 tributed and bv no means rare. 



97. Baccha pluuibicincta, Brun. 



liacclia pluuihicimia, Brunetti, Rec. Iiid. Mus. xi, p. '2'1'1 (1915). 



$ . Head : frons broad, distinctly but not greatly broader above 

 antennal prominence, where it is nearly one-fourth the width of 

 the head ; bluish-black, the colour shar[)ly demarcated behind 

 vertex; a little whitish tomeiitum about the middle of inner orbit 

 of eyes; face, down to a little above mouth-upeuing, bluish-black, 

 slightly grey-dusted, with a central conspicuous black bump; 

 remainder of lou er part of head, including buccal region, uniformly 

 bright yellow. Anteniuc black, 3rd joint broad, arista bhick. 

 Occiput grey. Thorax: dorsum and scutellum lead-colour, shiin'ng, 

 with slight coloured reflections when viewed from different angles ; 

 minute yellow pubescence ; remainder of thorax bright yellow. 

 Abdomen only slightly contracted on second segment, remainder 

 of segments barely wider, the abdomen at no point quite so wide 



