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 flexure of the praebrachial 

 vein. Alulae white. Length of the body 4 lines 5 of the wings 8 lines. 

 Mount Ophir. 



Subfam. Muscides. 

 Gen. Idia, Meigen. 



76. Idia tenebeosa, n. s., fcem. Obscure viridis punctata, capite pedibus 

 halteribusque nigris, antennis piceis, alis fusco-cinereis apud costam nigris. 



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

 in front. Frontalia dull black, hardly decreasing in breadth to the base of 

 the antennae which are piceous. Thorax very minutely punctured, with a 

 slight hoary tinge which is interrupted by three slender indistinct black 

 stripes. Abdomen shining, thickly punctured. Legs black. Wings brownish 

 grey, black along the costa. Alulae grey, with black borders. Halteres black. 

 Length of the body 4| lines ; of the wings 7 lines. 



Mount Ophir. Inhabits also South Africa. 



77. Idia bicoloe, n. s., foam. Viridis, capite albido, facie nigra, frontalibus 

 obscure nigris, antennis fulvis, thorace nigro-quadrivittato, abdomine aeneo- 

 marginato, vitta dorsali nigra, pedibus nigris, alis cinereis costa apiceque 

 nigricantibus, halteribus albidis. 



Female. Green. Head whitish and shining above, black and shining in front. 

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

 with a slight hoary bloom and with four slender black stripes. Abdomen 

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

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

 and at the tips. Alulae dingy whitish. Halteres whitish. Length of the 

 body 3 lines ; of the wings 5 lines. 



Malacca. 



Gen. Musca, Linn. 



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

 (Grenus Chrysomyia, Desv.) 



Singapore. Inhabits also Hindostan. 



79. Musca chrtsoides, n. s. (genus Chrysomyia, Desv.), mas. Sericeo-viri- 

 dis, capite testaceo, palpis antennisque fulvis, abdominis vitta dorsali fasciis- 

 que nigris, alis subcinereis apice obscurioribus. 



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

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

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

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

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

 what rounded angle at its flexure, from whence it is slightly curved inward 

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

 than its length from the border, and by a little less than its length from the 

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

 body 5 lines ; of the wings 10 lines. 



Malacca and Mount Ophir. 



