150 MR. WALKEE ON DIPTERA COLLECTED IN AMBOTNA. 



Male. Blight emerald green. Head shining white in front; disk of 

 the vertex purphsh bhie. Proboscis testaceous. Antennae black, 

 testaceous towards the base ; 3rd joint lanceolate ; arista about as long- 

 as the thorax. Thorax with three cupreous stripes ; pectus shining 

 white. Abdomen bluish green, white on each side, with broad black 

 bands, which are partly cupreous on each side. Legs whitish ; tarsi, 

 hind femora towards the tips, and hind tibiae towards the base, black. 

 Wings grey, with an irregular subapical blackish band, which is ab- 

 breviated hindward ; fore branch of the prsebrachial vein curved in- 

 wards ; discal transverse vein deeply undulating. Length of the body 

 5 1 lines; of the wings 8 lines. 



27. PsiLOPUs PERFiciENS, n. s. FcBni. Cyaneus, latiusculus, capite 

 purpureo, antennis pedibusque nigris, arista thoracis longitudine, 

 thorace vittis tribus cupreo-viridibus, abdomine viridi, alis cineras- 

 centibus. 



Female. Blue, rather broad. Head purple, silvery in front. Antenna; 

 black, with four setae; 3rd joint lanceolate; arista as long as the 

 thorax. Thorax with three bright cupreous-green stripes ; the middle 

 one with a purple tinge along each side. Pectus silvery. Abdomen 

 green. Legs black. Wings greyish ; fore branch of the praebrachial 

 vein scarcely curved ; discal transverse vein nearly straight ; halteres 

 black. Length of the body 3 lines ; of the wings 6 lines. 



28. PsiLOPUS SUPERANS, n. s. Mas. Laete viridis, capite supra pur- 

 pureo, antennis nigris brevissimis, arista thoracis fere longitudine, 

 thorace vitta cuprea, abdomine cupreo basi cyaneo-viridi fasciis aurato- 

 viridibus sutm'is nigris, pedibus obscure fulvis, alis cinerascentibus. 



Male, Bright green. Head broader than the thorax, purple above. 

 Antennae black, very short ; arista hardly shorter than the thorax. 

 Thorax with a cupreous stripe ; pectus with very slight whitish tomcn- 

 tum. Abdomen cupreous, much narrower than the thorax, bluish 

 green at the base, with golden-green bands ; sutures black. Legs dull 

 tawny. Wings greyish ; veins black ; fore branch of the praebrachial 

 vein forming a rounded but very abrupt angle, straight from thence 

 to its tip ; discal transverse vein straight. Length of the body 2 hues ; 

 of the wings 3| lines. 



Tarn. PIPUNCULID^, Curt. 

 Gren. PiPUNCULus, Latr. 



29. PiPUNCULUS Amboinalis, n. s. Mas. Testaceus, antennis piceis, 

 abdomine atro fasciis albido-cinereis, femoribus apices versus nigris, 

 alis longis cinerascentibus, vena prsebrachiali angulata furcata, halte- 

 ribus albidis. 



Male. Testaceous. Head with white toraeutum. Antennae piceous. 



