128 MR. walker's catalogue of dipterous insects 



120. Idia bivittata, n. s., foem. Rufa subtus testacea, capita antico nigro, 

 tliorace vittis duabus nigris, abdomino supra nigro vitta brevi anticd rufa, 

 pedibus testaceis, tarsis anticis nigi-is basi albidis, alis fusco-ciaereis. 



Var. /3. Thorace nigro vittis duabus cams, abdominis dorso toto nigi'o. 



Female. Red, testaceous beneath. Head black in front. Antennae pale red. 

 Thorax with two black stripes. Abdomen above black, with a short red 

 sti'ipe on the anterior part. Legs testaceous ; fore tarsi black, whitish 

 towards the base. Wings brovniish-grey, darker along the costa towards 

 the base ; veins black. Halteres testaceous. 



Var. 13. Thorax black, with two hoary stripes. Abdomen wholly black above. 

 Length of the body 3 Unes ; of the wings 5 lines. 



Gen. MuscA, Zdnn. 



121. Musca flaviceps, Macq. See page 23. 



122. Musca chalybea, Wied. Auss. Ziveifl. ii. 402. 30. 

 Inhabits also Java. 



123. Musca micans?, Fair. Syst. Antl. 291. 38 (genus Silbomyia, Macq^. 

 Inhabits also Hiudostan, Sumatra and Java. 



This is certainly the S. micaiis of Macquart, but does not quite agree with 

 the descriptions of Fabricius and of Wiedemann. 



124. Musca trita, Walk. See page 24. 



125. Musca difSdens, Walk. See page 26. 



126. Mfsca exempta, n. s. (n. subgen. aUied to PyreUia, Desv.), foem. Laete 

 viridis, palpis antennisque nigris, abdomiuis disco pm-pureo, pedibus piceis, 

 alis subcinereis basi fuscis, venis prsebrachiaU et cubitaH conjiinctis. 



Female. Bright green. Palpi and antennte black. Disk of the abdomen 

 purple. Legs piceous ; femora darker than the tibiae. Wmgs shghtly 

 gi-eyish, brown at the base and along nearly half the length of the costa ; 

 veuas black ; pi-aebrachial vein cmTcd, not angidar, jouiing the cubital vein 

 near the tip of the latter ; discal transverse vem almost straight, parted by 

 ' less than its length from the border, and by more than its length from the 

 flexure of the prsebrachial. Alulae lixrid. Length of the body 2 lines ; of 

 the vnngs 3^ Hnes. 



127. Musca domestica, Linn. Syst. Nat. ii, 990. 



Inhabits also Eiu-ope and some parts of Africa, Asia, and America. 



Gen. Bengalia, Dev. 



128. Bengalia Dioclea, Walk. Cat. Dipt. pt. 4. 869 (Musca). 



Subfam. Anthomtides, Walk. 

 Gen. Aricia, Macq. 



129. Aricia patula. Walk. See page 28. 



This may perhaps be a vai'iety of Anthomyia quadrata, Wied, Auss, Zweifl, 



ii. 428. 14. 

 The latter inhabits Java. 



