COLLECTED AT SINGAPORE AND MALACCA. 23 



hardly undulating, parted by a little less than its length from the border, 

 and by much more than half its length from the flexiue of the prKbracliial 

 vein. Alulae white. Length of the body 4 hues ; of the wings 8 lines. 

 Mount Ophir, 



Subfam. Muscides. 

 Gen. Idia, Meigen. 



76. Idia tenebeosa, u. s., foem. Obscm-e viridis punctata, capite pedibus 

 halteribusque nigris, auteunis piceis, ahs fusco-cinereis apud costam uigris. 



Female. Dull green. Head slightly tuberculated above, black and shhiing 

 in front. Frontaha dull black, hartUy decreasing in breadth to the base of 

 the antennae which are piceous. Thorax very minutely punctm-ed, Ts-ith a 

 shght hoary tmge wliich is mterrupted by three slender indistinct black 

 stripes. Abdomen shming, thickly ptuictured. Legs black. Wings brownish 

 grey, black along the eosta. Alulae gi'ey, with black borders. Halteres black. 

 Length of the body 4^ hues ; of the wings 7 lines. 



Mount Ophir. Inhabits also South Africa. 



77. Idia bicolob, n. s., foem. Viridis, capite albido, facie nigra, frontalibus 

 obscui'e nigris, antennis fulvis, thorace nigro-quadrivittato, abdomine aeneo- 

 marginato, vitta dorsah nigra, pedibus nigris, ahs ciuereis costa apiceque 

 nigricantibus, halteribus albidis. 



Female. Green. Head whitish and shmuig above, black and shinuig in front. 

 Frontaha dull black, linear, furcate hindward. Antennae tawny. Thorax 

 with a shglit hoai-y bloom and with four slender black stripes. Abdomen 

 aeneous at the tip and along each side, and with a shght black dorsal stripe. 

 Legs black ; coxae and femora green. Wings grey, blackish along the costa 

 and at the tips. Alulas duigy whitish. Halteres whitish. Length of the 

 body 3 lines ; of the wings 5 lines. 



Malacca. 



Gen. MuscA, Linn. 



78. Musca flaviceps, Macq. Dipt. Exot. ii. 2. 145. 23. pi. 18. f. 1. (Luciha.) 

 (Genus Chrysomyia, Desv.) 



Singapore. Inhabits also Hindostan. 



79. Musca chrtsoides, n. s. (genus Cln-ysomyia, Desv.), mas. Sericeo-vfri- 

 dis, capite testaceo, palpis autennisque fulvis, abdommis vitta dorsah fascus- 

 que uigris, ahs subcmereis apice obscurioribus. 



Male. Sericeous green, hardly shmhig. Head testaceous. Proboscis black. 

 Palpi and antennae tawny. Abdomen with a black dorsal stripe, and with 

 a black band on the liind border of each segment. Legs black ; coxae and 

 femora green. Wings greyish, much darker towards the tips ; veins black, 

 tawny along the costa ; prsebrachial vein forming a very obtuse and some- 

 what roimded angle at its flexure, from whence it is shghtly curved inward 

 to its tip ; discal transverse vein deeply undulating, parted by much less 

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

 flexure of the praebrachial vein. Aiidce dingy testaceous. Length of the 

 body 5 hues ; of the wings 10 lines. 



Malacca and Mount Ophir. » 



