50 E, Brunetti : Notes on Oriental v^yrphidae. [Voi,. 11, 



BACCHA, F. 



Twenty-one species of Baccha have been recorded from the 

 East. Mr. Austen's paper on some new species of this genus in 

 the British Museum (Proc. Zool. Soc. Lond., 1893, p. 132) coii- 

 tains descriptions of seven from the Orient^ excellenth" illustrated, 

 and to these I add three more which appear to be new. 



B. robusta, mihi, sp. nov. (PI. xi^ figs. 3, 4.) 

 (f 2 . Lower Burma (Mergui). Long. 10-12 mm. 



cf . Front above antennae triangular, nearly wholly occupied 

 by a shining black triangle ; the remainder grey ; vertex shining 

 black ; below antennae dull black, seen from below, but brilliant, 

 shining, silver^' white seen from above. Eyes subcontiguous at 

 nearest point of approach, rather widely sepiarated at vertex. 

 Antennae bright red, tip of 3rd joint brown above. 



Thorax : dorsum cinereous, with three darker stripes, of which 

 only the centre one attains the fore border. Humeral calli testa- 

 ceous ; sides of thorax grey. vScutellum dull testaceous. 



A bdonien only slighth- contracted at base ; 2nd and 3rd seg- 

 ments pale tawny, posterior borders widely blackish, 4th segment 

 all black, with an arched band near base, of pale shining grey, inter- 

 rupted in the middle ; extreme posterior border of segment brown. 



Legs black ; four anterior femora, basal half of hind femora, 

 and basal half of all the tibiae, yellowish tawny; tips of anterior 

 femora sometimes darkened above. 



Wings clear ; stigma 3'ellow, halteres yellowish. 



$ . Front rather broad, gre3', the callosity above antennae 

 shining black, oblong, nearly reaching from eye to eye ; upper 

 i)art of frons shining black, reaching from vertex nearly to the 

 callosit}'. Abdomen black ; 2nd segment with a vertically elongated 

 pale spot on each side, nearly meeting in the centre on the fore- 

 border ; 3rd and 4th with a transverse hoary yellowish gre^' oval 

 spot on each side, nearly on the fore border ; 4th segment with 

 brown posterior border ; last segment brown. 



Described from six a" d". and four $ ? in the Indian Museum 

 C(^llection from Mergui. 



B. nigricosta, mihi, sp. nov. (PI. xi, tig. 5.) 

 cf . Lower Himalayas (Bhim Tal, 4,500 feet). Long. 10 mm. 



P'ront above and below antennae grey dusted. Eyes quite 

 contiguous nearly to the vertex, which is very small and shining 

 black. Below antennte a wide shining black stripe ; frontal triangle 

 aljove antennte shining black seen from the front. Antennae reddish 

 brown, the two basal joints black. Proboscis black, tip red. 



Thorax shining black, minutely pubescent, unmarked, sides 

 l:)lackish grey ; scutellum rather large, shining black, with a few 

 pale hairs. 



