BACCHA. 115 



(b) Side-spots distinct, three, elongate, 



presutural, mes. 'pleural and sterno- 

 pleiiral. Abdomen mainly reddish- 

 brown, with a large yellow spot at 

 or towards tip of 3rd segment. . . . irianf/ulifera, Aust., p. 124. 



(c) Side-spots as in triant/ulifera. Ab- 



domen mainly yellow with black 



bauds across ;ird and 4th segments mnphitlioe, Walk., p. 126. 



^0. Baccha dispar, Walk. 



Baccha disjya?; AValker, Proc. Linn. Soc. Lond. iv, p. 121 (1860). 



c? $. Head: eyes dark red-brown, in d closely contiguous, the 

 very small black vertex bareiy raised, bearing a few black-brown 

 stiff liairs ; in $ comparatively well separated ; frons in d fairly 

 prominent, shining black, with an aeneous tinge and black-brown 

 hairs, rapidly widening in $ to 2| times as wide at level of an- 

 tennae, with yeliowisb-grey dust except on the shining black 

 vertex ; face sliglitly narrower in cJ and $ in lower than in upper 

 part, yellow with a broad blackish median stripe and whitish 

 pubescence; mouth-border and proboscis brown. Eegion round 

 base of antennae shining black ; antennae bright orange. Occiput 

 dark, with fringe of pale yellow hairs. Thorax black, with 

 brownish-yellow pubescence; humeri brownish-yellow; a con- 

 spicuous yellowish presutural callus-like spot in S , which in $ 

 ■extends nearly to the humerus; a similar vertical spot on meso- 

 pieura, bearing whitish pubescence ; sternopleura with upper part 

 -aeneous in d , in 2 bearing a callus-like horizontal spot, all the 

 spots in $ more orange. Pleurae a little aeneous in front in S , 

 lower part of sternopleurae grey-dusted in cf $ ; inconspicuous 

 whitish pubescence on pleurae generally. Abdomen: in c^ , 1st 

 segment dull brownish-yellow, remainder shining black ; 3rd seg- 

 ment with a pair of narrow, linear, diagonally placed yellowish 

 spots across middle of surface, their iinier ends well separated ; 

 4th segment with a pair of rather large yellowish spots on anterior 

 margin, their inner sides well separated and parallel, their outer 

 sides arcuate, the convexity outwards, their hinder sides deeply 

 excised, the whole spot roughly in the shape of a tiiiger and thumb. 

 In $ with 1st and 2Md segments and basal iialf of '6vd sliining brown ; 

 rest of abdomen black; a broad yellowish transverse band 

 occupying middle third of ord segment, and a similar band on base 

 of 4th, bent hiiulwards at each end, not reaching side margins. 

 Pubescence in 6 and $ sparse, whitish. Venter yellowish, some 

 darker transverse bands corresponding to the darker parts on 

 upper side. Le(js : fore legs yellowish-orange ; hind coxa' black, 

 rest of legs generally rather darker; apical half of hind femora 

 and hind tibiae (in $ ) and the metatarsi (in 2 ) dark brown, 

 WiiKIs clear; a moderately dark brown narrow band on cost a 

 extpnding to tip of 3rd vein ; a transverse band from costa, nearly 

 -reaching hind margin, ending over tip of anal cl'II, in breadth 



i2 



