294 ME. WAIiKEE's CATALOGUli; OF DIPTEROUS INSECTS 



from the prsebrachial transverse vein; lialteres piceous. Length of 

 the body 4 lines ; of the wings 8 lines. 



Gren. Dacus, Fair. 



86. Dacus PUBiSETA,n. s. Mas. Cyaneus, elongatus, capite argenteo, 

 facie fulva palpis nigris apice fulvis, antennis fulvis articulo 3" lon- 

 gissimo arista alba pubescente, thorace vittis tribus cinereis, abdoniine 

 compresso cupreo-purpureo, femoribus halteribusque albis, alis sub- 

 cinereis nigro bifasciatis, fascia 1" incompleta, 2^ lata vittam costa- 

 lem emittente. 



Allied to D. divergens and to D. addens, 



Male. Blue, elongate. Head with silvery-white tomentum behind, in 

 front, and about the eyes ; disk of the face tawny, its grooves for the 

 antennae alongside of the eyes. Palpi black, with tawny tips. An- 

 tennae tawny, as long as the face ; 3rd joint slender, six times the 

 length of the 2ud, slightly broader towards the tip which is rounded ; 

 arista white, much longer than the 3rd joint, denselj^ pubescent except 

 towards the tip. Thorax with three cinereous stripes ; pectus silvery 

 whitish; scutellum with two long apical bristles. Abdomen com- 

 pressed, cupreous-purple, varied with blue, much longer and narrower 

 than the thorax. Legs purplish-black, with silvery-whitish tomentum ; 

 femora white, except towards the tips. Wings slightly cinereous, 

 with two black bands ; 1st band incomplete; 2nd broad, emitting a 

 costal stripe to the tip of the wing ; veins black ; discal transverse 

 vein upright, slightly curved outward, parted by about one-fourth of 

 its lengtli from the border, and by rather less than its length from the 

 prajbrachial transverse vein, which is long and very oblique; halteres 

 white. Length of the body 6 lines ; of the wings 10 lines. 



87- Dacus discipennis, u. s. Fcetn. Fulvus, capite lutescente, facie 

 nigro biguttata, antennis facie longioribus, arista nuda, thoracis disco 

 piceo-nigro strigis maculisque duabus lateralibus flavis, abdomine 

 fusiforrai ferrugineo segmento 2° fulvo, pedibus fulvis, tarsis halteribus- 

 que pallide flavis, alis subcinereis, dimidio antico vittaque postica 

 fuscis. 



Allied to D. emittens. 



Female. Tawny. Head more luteous ; face with a black dot in the 

 groove for the antenna on each side. Antennae longer than the face ; 

 1st and 2nd joints rather long; 3rd linear, slender, oblique at the tip, 

 about thrice the length of the 2nd ; arista bare, much longer than the 

 3rd joint. Metathorax and disk of the thorax and of the pectus 

 piceous black ; an oblique yellow streak on each side of the pectus, 

 and a large spot of the same colour on each side of the metathorax. 

 Abdomen fusiform, ferruginous, longer and a little narrower than the 

 thorax ; 2nd segment tawny. Legs tawny ; tarsi pale yellow. Wings 

 slightly cinereous, dark brown on half the breadth from the costa. 



