198 Mr. F. Walker's Characters of undescribed Diptera 



Eurigaster ? languida. 



Fcem. — Nigra, robusta, cinereo-tomentosa, capite albo, fronta- 

 libiis atris, oculis iiudis, palpis fiilvis, anteiinis piceis, thorace 

 vittis quatiior nigris, scutello fulvo, abdomine ovato maculis 

 duabus lateralibus fulvis, alls cinereis, alulis albidis. 

 Female. — Black, stout, with cinereous tomentum, beset with 

 numerous bristles ; vertex with a longer bristle on each side ; 

 head with white tomentum ; frontalia deep black, linear, with two 

 rows of bristles which extend to about one-third of the length of 

 the face ; facialia without bristles ; epistoma not prominent ; 

 eyes bare ; palpi tawny ; antennae piceous, not reaching to the 

 epistoma ; third joint linear, nearly thrice the length of the se- 

 cond ; arista stout for about one-third of its length, much longer 

 than the third joint ; thorax with four black stripes ; scutellum 

 tawny; abdomen oval, a little longer than the thorax, with a 

 tawny spot on each side of the second segment, and with two 

 stout spines on its hind border, several stout spines towards the 

 tip ; wings grey ; veins black ; praebrachial vein forming a right 

 angle at its flexure, curved from thence to its tip, which joins the 

 costal at far in front of the tip of the wing ; discal transverse vein 

 almost straight, parted by less than its length from the border and 

 from the flexure of the praebrachial ; alulae whitish. 

 Length of thelbody 4 lines ; of the wings 7 lines. 

 Hindostan. 



Genus Masicera, Macq. 



Masicera longiuscula, 



Mas. — Nigra, capite albo subtus cano-piloso, frontalibus atris, 

 oculis pubescentibus, palpis apice testaceis, thorace cano 

 lineis quatuor nigris, abdomine elongato obconico, maculis 

 lateralibus trigonis canis, alis subcinereis, alulis albis. 

 Male. — Black ; head with white tomentum, clothed behind and 

 beneath with hoary hairs ; frontalia deep black, widening in front ; 

 facialia with bristles along the whole length, besides a few bristles 

 which extend from each side of the frontalia ; epistoma not pro- 

 minent ; eyes pubescent ; palpi testaceous towards the tips ; 

 antennae wanting ; thorax hoary, with four black lines ; abdomen 

 elongate, obconical, much longer than the thorax, setose towards 

 the tip, with large triangular spots of hoary tomentum on each 

 side ; wings slightly greyish ; veins black ; praebrachial vein 



