MR. WALKER ON DIPTERA COLLECTED AT MAKESSAR. 181 



whitish ; halteres testaceous. Length of the body 3i liues ; of the 

 wings 6 hnes. 



116. Dexia PRECEDENS, n. s. F(Ein. Cinerea, capita albo lateribus 

 antieis piceis, palpis pedibusque nigris, antennis testaceis, thorace vittis 

 tribus nigris, abdomine basi lateribus fasciaque nigris, punctis latera- 

 libus albis, pedibus longiusculis, alis cinereis, alulis albis. 



Female. Cinereous ; head white, piceous on each side in front ; fron- 

 talia deep black, slightly widening to the face, with bristles along each 

 side ; facialia without bristles ; epistoma not prominent ; palpi and 

 legs black ; antennae testaceous, not reaching the epistoma, 3rd joint 

 not thrice the length of the 2ud ; thorax with three black stripes, the 

 the lateral pair abbreviated hindward ; abdomen a little longer than 

 the thorax, black and with white points along each side, black at the 

 base and with a black band on the hind border of the 2nd segment ; 

 legs rather long ; wings cinereous ; veins black ; prgebrachial vein 

 forming a rounded and very obtuse angle at its flexure, almost straight 

 from thence to its tip ; discal transverse vein nearly straight, parted 

 by less than its length from the border, and by ver}^ much more than 

 its length from the flexure of the praebrachial ; alulae white ; halteres 

 piceous. Length of the body 2i lines; of the wings 4 lines. 



Gren. ToEOCCA, n. g. 



Fosm. Corpus gracile, sublineare. Proboscis palpique brevissimi. An- 

 tennoe brevissimse, arista nuda. Thorax brevis. Abdomen longissi- 

 mum, thorace plus duplo longius Pedes longissimi. Alee angustae. 



Female. Body slender, nearly linear. Head as broad as the thorax. 

 Pi-oboscis and palpi veiy short. Antennae very short, not nearly ex- 

 tending to the epistoma ; 3rd joint linear, rounded at the tip, about 

 twice the length of the 2nd; arista bare, stout towards the base, 

 full twice the length of the 3rd joint. Thorax short. Abdomen very 

 elongate-fusiform, more than twice the length of the thorax. Legs 

 very long. Wings narrow. 



117- ToRocCA ABDOMiNALis, n. s. Foem. Viridis, capite pectoreque 

 albis, proboscide palpisque fulvis, antennis pedibusque nigris, abdo- 

 mine fulvo segmentorum marginibus posticis vittaque dorsali nigris, 

 alis nigricanti-cinereis, alulis albido-cinereis. 



Female. Green, bristly ; head and pectus white ; frontalia deep black, 

 widening to the face, with a row of bristles along each side ; facialia 

 without bristles ; epistoma not prominent ; eyes bare ; proboscis and 

 palpi tawny ; antennae black : abdomen tawny, with a few spines ; 

 hind borders of the segments black ; 1st segment black at the base, 

 and with a broad black stripe : legs black ; wings blackish cinereous ; 

 veins black ; pncb)"achial vein forming an almost right angle, and 

 emitting a short stump at its flexm'c, nearly straight from thence to 

 its tip ; discal transverse vein very undulating, parted by about half its 



9* 



