466 E. Brunetti : Oriental Bomhylidcs. [Voi.. II, 



ill-defined cross-band, commencing at the upper edge of the margi- 

 nal cell, the width of the band being about one- third of the length 

 of the 1st sub-marginal cell, across the middle of which it passes ; 

 continuing across the middle of the closed portion of the ist pos- 

 terior cell, the distal half of the discal cell and the bases of the 2nd 

 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. Tegulse reddish orange with a short 

 dense fringe of concolorous hair. 



Described from two specimens from Pusa (Bengal). One 

 (type) in the Pusa collection, taken i9-iv-07 ; the other in the 

 Indian Museum collection, taken 25-V-06. 



N.B. — These two species, fiammea and flavipennis are dis- 

 tinct from all the other Eastern ExoprosopcB known to me, by the 

 1st posterior cell being closed some distance before the border, 

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

 anterior branch of the latter (in fiammea), or just below it (in flavi- 

 pennis). They therefore belong to the group for which Rondani 

 established the genus Argyrospyla (emended by Verrall from Argy- 

 rospila), but which the late Baron Osten Sacken says (Biol. Cent. 

 Am. Dip., i, y8) cannot be sustained, this character in various 

 species showing all stages between a closed and open cell, some- 

 times even in the same species. Of the species of Exoprosopa 

 admitted in this paper the following have not been seen by me; 

 I cannot say, therefore, whether any of them possess a closed pos- 

 terior cell or not : alexon, auri plena, semilucida, basi fascia, albida, 

 all by Walker. 



Exoprosopa fiammea, mihi, sp. nov. 

 $ . Bengal. lyong. 18 mm. 



Head. — Entire frons and face orange-yellow, covered with 

 short golden yellow hairs ; lemon-yellow round the mouth, with 

 short 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 ist 

 joint which is reddish. Proboscis brown, shorter than length of 

 head. Eyes dark reddish brown, facets very small, uniform. Back 

 of head 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 bristles pointing back- 

 wards. The anterior border and shoulders are covered with thick 

 long fiery reddish yellow hair, which is also abundant behind the 

 wings. The dorsum (slightly denuded) is evidently lightly clothed 

 with short orange-yellow hairs. Under side of thorax cinereous, 

 with a moderate amount of orange- yellow hair. Scutellum red- 

 dish brown, the posterior margin bearing a row of concolorous 

 strong bristles directed backwards and downwards. Dorsum with 

 sparse yellowish hairs. 



