1909-] Records of the Indian Museum. 465 



segments narrowl}'- brick-red. Sides of abdomen with rather thick 

 3^ellow hair, which becomes thinner and paler towards the tip. 

 Belly black, with black hairs, central segments paler in the 

 middle. 



Legs. — Dark brown, bare ; hind femora with a row of spines 

 below. 



Wings. — Uniformly rich dark brown, unmarked ; wide across 

 the centre. 



Described from a unique 2 in the Indian Museum from Shil- 

 long (Assam). The type is in good condition except for the par- 

 tial denudation of the abdomen. The species is quite distinct 

 from all others. 



Exoprosopa flavipennis, mihi, sp. nov. 



9 . Bengal. Long. 14-18 mm. 



Head. — Frons and ocelli as in flamniea. Frons orange with 

 golden orange, close, short hairs. Mouth-border yellow, antennae 

 orange : ist two joints sub-cylindrical, wider at tip, with 3^ellow 

 hairs, 2nd shorter than ist ; 3rd joint twice as long as first two 

 together, bare, the upper side quite straight, the under side rapidlj^ 

 narrowing from base to tip, a ver}- distinct cylindrical style at tip. 

 Proboscis brown, shorter than the head. E^^es reddish brown, 

 bare, with small, uniform facets. Back of head reddish orange, 

 bare, considerably prominent, with a narrow fringe of very short 

 bright yellow hairs on the margin of the cavity behind. 



Thorax. — Ferruginous orange with black dorsum and blackish 

 grey under side. A fringe of long yellow hair on anterior margin ; 

 a bunch of fiery orange-red bristl}^ hairs on shoulders, and shorter 

 similar ones on the humeral calli ; the dorsum clothed with moder- 

 ately close, short orange hairs; several long fiery orange-red bristles, 

 directed backwards, on the posterior calli. Under side nearly 

 bare, a few blackish hairs here and there. Scutellum orange-red, 

 covered with short, similarly coloured pubescence ; posterior 

 margin with a horizontal row of concolorous strong bristles. 



Abdomen. — Sub-conical; ground colour black, apparently with 

 short, close, black pubescence. A bunch of orange-red hairs at 

 the shoulders of the ist segment ; sides of 2nd segment dull 

 reddish. Belly black, unmarked. Genital apparatus in one 

 specimen, orange, subspherical, slightly protruding, and apparently 

 twisted to the left. 



Legs. — Coxae and femora dark brown ; anterior tibiae brown- 

 ish yellow, hind pair black ; all the knees pale ; tarsi black ; fore 

 legs practically bare, posterior, minutely pubescent and with 

 distinct black bristles, which are stronger on the hind pair ; pos- 

 terior tarsi closely pubescent, with black bristles on under side. 



Wings. — First posterior cell closed some distance before the border 

 as in flammea. Rather more than the proximal half bright orange- 

 yellow, apical part and a narrow margin along the posterior margin 

 almost to the base, quite clear. An intermediate dark brown, 



