210 BOMBTLIIDJ3. 



slight dull brown reflection on the tibiae in certain lights. Wings 

 absolutely clear, vitreous, highly iridescent ; costal, auxiliary, and 

 1st longitudinal veins and those at base of wings yellowish, the 

 remainder black ; halteres yellow. 



Length, 10 mm. 



Described from a single J in the Indian Museum from Maha- 

 baleshwar, Satara District, Bombay Presidency, 4200 ft., 13-16. 

 iv. 1912 (Gravely}; in the British Museum, from Trincomali, 

 4.iv.l892, and Mahagany, Ceylon, 12. ii. 1891 (Col. Yerbury). 



Very near E. vitrea, Big., differing by the wholly reddish-brown 

 antenna, the whitish hair on anterior margin of thorax, the 

 wholly black scutellum, the wholly clear wings, and the absence 

 of any reddish colour towards the sides of the dorsum. 



158. Exoprosopa vitrea, Big. 



Exoprosopa vitrea, Bigot, Ann. Soc. Ent. France, Ixi, p. 344 (1892) ; 

 Brunetli, liec. Ind. Mus. vii, p. 468, pi. xxxvii, fig. 5 (1912). 



<3 $ . Head : frons at level of antennae barely one-third the 

 width of the head, narrowing to nearly one-third of that width at 

 vertex in c? and to half that width in $ , black, with black hairs, 

 the lower half with short bright yellow scales ; face with similar 

 scales and a few short bright yellow hairs ; facial bump fairly large ; 

 mouth-border pale whitish yellow; proboscis black ; antennae black, 

 no trace of lighter colours ; back of head moderately protruding, 

 black, with an irregular narrow fringe immediately behind the 

 eyes of very small greyish- white scales lying close to the surface ; 

 hind margin of head with a fringe of short yellow or yellowish- 

 white haird. Thorax dark blackish brown ; anterior margin and 

 shoulders with thick bright yellow scale-like hairs, which are 

 continued around the whole of the prothorax, but in the tf they 

 are quite black for a considerable space on the lower part (imme- 

 diately below the mouth), whereas in the they are sometimes 

 uniformly yellow and sometimes similar to those of the cf ; surface 

 of dorsutn covered with short depressed brownish-yellow hairs ; 

 pleurae with yellowish-grey or grey hairs, and some around the 

 base of the wing. Abdomen black, with very short depressed 

 bright yellow hairs and black pubescence in the cf ; the sides of 

 the 2nd, 3rd, and 4th segments are broadly and completely 

 covered with small snow-white depressed scales, which also form 

 an entire band across the basal half of the two latter segments ; 

 these scales are practically absent in the $ , but a few are usually 

 present. Venter blackish, the middle part a little paler, generally 

 with a considerable space covered with soft short white hairs ; 

 tip inclined to be reddish. A considerable amount of white hairs 

 in both sjxes at anterior corners of abdomen. Legs wholly black, 

 with the usual fine pubescence and very short black bristles. 

 Wings clear, costal and subcostal cells very pale yellowish grey ; 

 halteres pale yellow. 



Length, 7-13 mm. 



Eedescribed from a cf and $ in cop. from Helwak, Koyna 



