EXOPEOSOPA. 193 



of auxiliary vein, the width of the baud being about one-third of 

 the length of the 1st subniarginal cell, across the middle of which 

 it passes ; continuing across the middle of the closed portion of 

 the 1st posterior cell, the distal half of the discal cell, and the 

 bases of the 2iid and 3rd posterior cells, after which it is narrowed 

 to a streak and turning, extends towards the base of the wing, 

 separating the yellow part from the clear margin. Alulae with 

 fringe of dirty grey elongate scales ; alar squamte reddish orange, 

 with a short dense fringe of concolorous elongate scales. 



Length, 14-18 mm. 



Described from two specimens from Pusa, Bengal. One (type) 

 in the Pusa collection, taken 19. iv. 1007; the other in the Indian 

 Museum collection, taken 25. v. 1906, now partly greasy. 



E. flammea, Brun., and fiavipennis, Brun., are distinguished 

 from all the other Eastern Exojvosopa known to me by the 1st 

 posterior cell being closed at some distance before the border, the 

 4th longitudinal vein meeting the 3rd before tlie origin of the 

 anterior branch of the latter (in Jlammea), or just below it (in 

 tiavipen]iis). They therefore belong to the group for M'hich 

 liondani established the genus Argi/ros/nfla (emended by Verrall 

 to Argyrospila), but wliich the late Baron Osten-Sacken says 

 (Biol. Cent.-AuK, Dipt, i, p. 78) cannot be sustained, this character 

 iu various species showing all stages between a closed and open 

 cell, sometimes even in the same species. 



144. Exoprosopa flammea, Brun. 



Exoprosopa Jlammea, Brunetti, llec. Ind. Mus. ii, p. 466 (1909). 



$ . Head with entire frons and face orange-yellow, covered 

 W'ith short golden-yellow hairs ; lemon-yellow round the mouth, 

 with shctrt bright yellow hairs; frons at level of antennae one- 

 third the width of the head, narrowing towards vertex; ocelli 

 small, close together in front of the vertex ; antennae missing, 

 except 1st joint which is reddish ; proboscis brown, shorter than 

 length of head ; eyes dark reddish brown, facets very small, 

 uniform ; occiput brick-red, rather prominent, with sparse short 

 golden-yellow hairs. Thorax cinereous; humeral and posterior 

 calli orange-tawny, the latter bearing five or six concolorous 

 spines pointing backwards ; the anterior border and shoulders 

 are covered with thick long tier_y reddish-yellow bristle-like scales, 

 which are also abundant below the shoulders and behind the 

 wings; tiie dorsum (slightly denuded) is evidently lightly clotlied 

 with short orange-yellow hairs ; underside of thorax cinereous, 

 with a moderate amount of orange-yellow hair. Scutellum i-ed- 

 ■dish brown, the posterior n)argin bearing a row of concolorous 

 strong bristles directed backwards ; dorsuui with sparse yellowish 

 hairs. Abdomen sub-conical ; ground-colour chiefly reddish brown ; 

 2nd segment with a narrow anterior and rather wider posterior 

 band connected by a thin dorsal stripe ; a rather wide irregular, 



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