120 MR. F. WAI.KEK ON NEW SPECIES OE DIPXEEA 



each side for the reception of the antennae; epistoma prominent. 

 Eyes very prominent. Antennse nearly as long as the face ; third joint 

 lanceolate, four times the length of the second ; arista plumose. Pectus 

 pale testaceous. Ahdomen green, tinged with cupreous and with 

 purple, pale testaceous beneath and at the base, a little broader and 

 longer than the thorax. Legs pale yellow; tarsi black. Wings 

 limpid ; veins black, pale testaceous towards the base ; discal transverse 

 vein straight, clouded with brown, parted by less than one-sixth of its 

 length from the border, and by much more than its length from the 

 oblique clouded praebrachial transverse vein ; halteres pale testaceous. 

 Length of the body 4i lines ; of the wings 8 lines. 



Gen. Platystoma, Latr. 



49. Platystoma brevis. Mas. Nigra, brevis, crassa, capite apud 

 oculos lineis duabus transversis guttisque duabus albidis, thorace 

 callis humeralibus albidis vittis tribus cinereis postice obsoletis, abdo- 

 minis segmentis albido marginatis, tarsis albis, tibiis anticis sub- 

 dilatatis, alis albidis maculis plurimis transversis fasciisque duabus 

 nigricantibus. 



Male. Black, broad, short, stout. Head whitish about the eyes ; hind 

 border of the vertex and fore border of the front and two dots be- 

 tween the eyes whitish; face shining; epistoma slightly retuse, whitish- 

 bordered. Antennse much shorter than the face; third joint nearly 

 linear, about twice the length of the second, which is piceous ; arista 

 slightly plumose. Thorax with two whitish humeral calli and with 

 three slender cinereous stripes, which are obsolete hindward. Abdo- 

 men oval, a little shorter and narrower than the thorax ; hind borders 

 of the segments whitish. Legs short, stout; tarsi white; fore tibiae 

 slightly dilated and fringed, with a whitish protuberance on the inner 

 side. Wings whitish, with numerous blackish transverse spots which 

 form incomplete bands ; subapical band and apical band entire, the 

 former including the discal transverse vein; veins black; discal 

 transverse vein straight, parted by one-third of its length from the 

 border, and by twice its length from the prBebrachial transverse vein ; 

 halteres whitish. Length of the body 4^ lines ; of the wings 9 lines. 



50. Platystoma inscripta. Mas. Nigricans, capite guttis latera- 

 libus cinereis fascia nigra, antennis rufis arista alba, thorace vittis 

 quatuor angulosis cinereis, pectore vittis sex cinereis, abdominis seg- 

 mentis cano marginatis apice rufescente, pedibus flavis tibiis nigro 

 bimarginatis, alis albidis guttis plurimis nigricantibus, halteribus 

 albidis. 



Male. Blackish. Head with cinereous dots along each side between 

 the eyes, whitish behind ; a black shining band between the antennse ; 

 face short, with cinereous dots ; epistoma prominent. Antennae red, 

 shorter than the face; third joint round, longer than the second, 

 black above in front ; arista white, stout, full thrice the length of the 



