MR. WALKER ON DIPTERA COLLECTED AT MAKESSAR. 131 



whitish ; halteres testaceous. Length of the body 3^ lines ; of the 

 wings 6 Hnes. 



116. Dexia PRECEDENS, n. s. FcBm. Cinerea, capite albo lateribus 

 anticis 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 2nd ; 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 ; prsebrachial 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 very 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. ToROCCA, n. g. 



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

 tenncs brevissimae, arista nuda. Thorax brevis. Abdomen longissi- 

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



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

 Proboscis and palpi very 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 j 



veins black ; praebrachial vein forming an almost right angle, and 



emitting a short stump at its flexure, nearly straight from thence to 



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



9* 



