ME. WALKEB OlST DIPTEEA COLLECTED AT MAKESSAB. 127 



hind tibiae slightly fringed ; wings grey ; veins black ; prcebraehial vein 

 forming a hardly obtuse angle at its flexure, almost straight from 

 thence to its tip ; discal transverse vein undulating, parted by much 

 less than its length from the border, and by a little less than its length 

 from the flexure of the prsebrachial ; alulae testaceous white, very 

 large. Length of the body 4^ lines ; of the wings 8 lines. 



108. EuRYGASTER PROMiNENS, n. s. Mos. Cinerco-nigra, capite albo, 

 oculis pubescentibus, palpis, antennis pedibusque nigris, thorace lineis 

 quatuor indistinctis, abdominis basi vitta dorsali et segmentorum mar- 

 ginibus posticis nigris, scutelli apice rufescente, abdomine segment! 2' 

 lateribus subrufescentibus, alis cinereis, aluUs albis. 



Male. Cinereous black j head white, with white hairs behind and beneath ; 

 frontalia deep black, widening to the epistoma, with a row of bristles 

 along each side and beyond ; facialia without bristles ; epistoma not 

 prominent j eyes pubescent j palpi black ; antennae extending to the 

 epistoma ; 3rd joint linear, narrow, rounded at the tip, full four times 

 the length of the 2nd ; arista much longer than the 3rd joint, stout to 

 nearly half its length ; thorax with fom* indistinct black lines ; scutel- 

 lum reddish towards its tip; abdomen nearly oval, cinereous, not 

 longer than the thorax; 1st segment, hind borders of the following 

 segments, and dorsal stripe black ; 2nd segment slightly reddish on 

 each side; legs black; wings grey; veins black; praebrachial vein 

 forming a right angle at its flexure, near which it is very slightly 

 curved mward, and is thence straight to its tip; discal transverse 

 vein hardly undulating, parted by much less than its length from the 

 border, and by less than its length from the flexure of the praebrachial ; 

 alulae white, very large. Length of the body 3^ lines ; of the wings 

 6^ lines. 



109. EuRYGASTER DEDUCENS, n. s. Fcem. Cinerea, capite albo, oculis 

 nudis, palpis, antennis pedibusque nigris, thorace lineis quatuor, ab- 

 dominis basi fasciisque tribus nigris, scutello rufescente, alis cinereis 

 basi nigris, alulis albis. 



Female. Cinereous, bristly, head white, with whitish hairs behind and 

 beneath ; frontalia deep black, widening to the face, with black bristles 

 along each side and beyond ; facialia without bristles, except by the 

 epistoma, which is slightly prominent ; eyes bare ; antennae reaching 

 the epistoma ; 3rd joint linear, rather broad, slightly rounded at the 

 tip, about four times the length of the 2nd ; arista much longer than 

 the 3rd joint, stout to half its length ; thorax with four black lines ; 

 scutellum reddish ; abdomen conical, not longer than the thorax, 

 black at the base, and with three black bands on the hind borders of 

 the segments ; wings grey, black at the base ; veins black, testaceous 

 at the base, except along the costa ; praebrachial vein forming an ob- 

 tuse angle at its flexure, slightly curved inward from thence to its tip ; 

 discal transverse vein straight, except a slight curve at its base, parted 



