COLLECTED AT DOEET, NEW GUINEA. 243 



thoracisque vittis tribus auratis, frontalibus atris, abdomine fasciis 

 qiiatuor latis sordide fulvis, alis fuscis apud costam nigricantibus, 

 halteribus testaceis. Fcem. Capite albo, frontalibus latis, thoracis 

 vittis albidis, abdomine fasciis duabus apiceque fuscis, segmentorum 

 marginibus anticis albidis. 

 Male. Cinereous black ; head with pale gilded tomentum ; frontaha 

 deep black, widening in front ; a slender middle stripe and two broad 

 lateral stripes on the thorax, and a band on the pectus pale gilded ; 

 abdomen with four broad dingy tawny bands ; 1st band interrupted ; 

 2nd and .3rd deeply notched ; 4th entire ; wings brown, blackish along 

 the costa ; veins black ; halteres testaceous. Female. Head white ; 

 frontalia broad, linear ; stripes and bands of the thorax whitish ; ab- 

 domen with two bauds and the tip shining brown ; fore borders of the 

 segments whitish. Length of the body 7-9 lines; of the wings 11-12 

 lines. 



Gen. Gtmnosttlia, 3Iacq. 



49. Gymnostylia invita, n. s. Mas. Nigra, gracilis, capita albo, 

 frontalibus atris, antennarum articulo 3° longissimo, thoracis vitta 

 dorsali lateribus pectoreque albo-schistaceis, abdomine compresso fas- 

 ciis duabus latis glauco-albidis, pedibus longis gracillimis, alis angustis 

 cinereis. 



Male. Black, slender ; head white ; fi-ontalia deep black, veiy narrow ; 

 eyes bare; antennae reaching the epistoma ; 3rd joint linear, slender, 

 about six times as long as the 2nd joint ; arista rather longer than 

 the 3rd joint ; thorax with a dorsal stripe, the sides and the pectus 

 slaty-white ; abdomen compressed, with two broad glaucous-whitish 

 bands ; legs long, very slender ; wings narrow, cinereous ; veins black ; 

 prsebrachial vein forming a rounded and very obtuse angle at its flex- 

 ure, from whence it is slightly curved inward to its tip ; discal trans- 

 verse vein undulating, parted by much less than half its length from 

 the border, and by a little more than its length from the flexure of the 

 prsebrachial ; alulaj white. Length of the body 4 lines ; of the wings 

 7 lines. 



Gen. Prosena, St.-Farg. 



50, Prosena lurida, n. s. Mas. Testacea, argenteo-tomentosa, 

 capite antico tumido, frontalibus nigris, thorace vittis quatuor indi- 

 stinctis obscurioribus, abdomine tessellato segmentis nigro marginatis, 

 femoribus nigris, tibiis posticis apice piceis, alis lurido-cinereis. 



Male. Testaceous, with silvery whitish tomentum ; head tumid in front ; 

 frontalia black, very narrow, widening towards the face ; mouth black, 

 testaceous at the base, as long as the thorax ; antennae testaceous ; 

 3rd joint loug, slender, not reaching the epistoma ; thorax with foxu" 

 indistinct darker stripes ; abdomen tessellated with whitish tomentum ; 

 hind borders of the segments black ; coxic and femora black ; tips of 



