26 MR. walkee's catalogue or dipterous insects 



curved inward to its tip ; discal transverse vein moderately vuidulatuig, 

 parted by little more than half its length from the border and by rather 

 less than its length from the flexm^e of the prgebrachial. Alulae grey. 

 Length of the body 3i Knes ; of the wings 7 Lhies. 

 Singapore. 



87. MusCA DIFFIDENS, n. s. (geuus Pyrelha, Desv.), foem. Cyaneo-vu-idis, 

 capite albido, palpis antennis pedibusque nigris, alls vix cinerascentibus. 



Female. Bright bluish-green. Head whitish. Proboscis, palpi, antennae 

 and legs black. Wings hardly greyish ; veins black ; prgebrachial vein 

 gently cm-ved at its flexm-e, from whence it is almost straight to its tip ; 

 discal transverse vein almost straight, parted by much less than its length 

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

 prajbrachial vein. Alulae whitish. Length of the body 3 lines ; of the 

 vdngs 6 lines. 



Singapore. 



88. MusCA CONFiXA, n. s. (genus Pyrellia, Desv.), fcem. La;te vfridis cyaneo 

 purpureoque varia, capite nigro, antice albido, palpis testaceis, antennis 

 nigi'is basi rufescentibus, abdommis apice subaeneo, pedibus nigris, aHs 

 cinereis. 



Female. Bright green, tinged with blue and purple along each side. Head 

 black above, whitish in front. Proboscis black. Palpi testaceous. An- 

 tennge black ; fii-st and second joints reddish. Abdomen shghtly aeneous 

 at the tip. Legs black ; femora green. Wings grey ; veins black ; prse- 

 brachial vein gently cm-ved at its flexure, between which and its tip it is 

 shghtly cm"ved inward ; discal transverse vein moderately undulating, 

 parted by much less than its length from the border, and by a httle less 

 than its length from the flexm-e of the prsebracliial vein. Alulae dark grey. 

 Length of the body 3i hues ; of the wings 7 hues. 



Mount Ophir, at the height of 4000 feet. 



89. MuscA BEFiXA, U.S. (genus Pyrelha, Desv.), foem. Purpiu-ea, lateribus 

 subtusque cyanea aut cyaneo-viridis, capite antico, palpis pedibusque nigris, 

 antennanim articido tertio pieeo, ahs subcinereis. 



Female. Purple shining, blue on each side and beneath. Head in front, pro- 

 boscis, palpi and legs black. Tliird joint of the antennae piceous. Wuigs 

 shghtly greyisJi ; vems black; praebrachial vein forming a gentle ciu"ve at its 

 flexure, wliich is very near the border, indistinctly cun^ed outward from 

 thence to its tip ; discal transverse vem almost straight, parted by httle 

 more than half its length from the border, and by about its length from the 

 flexure of the prsebracliial vein. Alulae grey. Length of the body 2^-2^ 

 lines ; of the wings 5-5^ hnes. 



Var.fi. Bluish-green. Scutellum purphsh-blue. Discal transverse vein very 

 indistinctly curved inward. 



Singapore. 



90. MuscA PEEFIXA, n. s. (genus Pyrelha, Desv.), foem. Purpurea, capite 

 palpis antennis pedibusque nigris, alis hmpidis. 



Female. Very nearly aUied to M. refixa. Purple, shining. Head and 

 appendages and legs black. Wings limpid ; vems black ; praebrachial vem 



