128 MR. walker's catalogue oe dipterous insects 



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

 thorace vittis duabus nigris, abdomine supra nigro vitta brevi antica rufa, 

 pedibus testaceis, tarsis anticis nigris basi albidis, alis fusco-cinereis. 



Var. (3. Tborace nigro vittis duabus canis, abdominis dorso toto nigro. 



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

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

 stripe on the anterior part. Legs testaceous ; fore tarsi black, whitish 

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

 the base ; veins black. Halteres testaceous. 



Var. /3. Thorax black, with two hoary stripes. Abdomen wholly black above. 

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



Gen. Musca, Linn. 



121. Musca flavieeps, Macq. See page 23. 



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

 Inhabits also Java. 



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

 Inhabits also Hindostan, Sumatra and Java. 



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

 the descriptions of Fabricius and of Wiedemann. 



124. Musca trita, Walk. See page 24. 



125. Musca diffidens, Walk. See page 26. 



126. Musca exempta, n. s. (n. subgen. allied to Pyrellia, Desv), fcem. Leete 

 viridis, palpis antennisque nigris, abdominis disco purpureo, pedibus piceis, 

 alis subcinereis basi fuscis, venis praebrachiali et cubitali conjunctis. 



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

 purple. Legs piceous ; femora darker than the tibiae. Wings slightly 

 greyish, brown at the base and along nearly half the length of the costa ; 

 veins black ; praebrachial vein curved, not angular, joining the cubital vein 

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

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

 flexure of the prgebrachial. Alulae lurid. Length of the body 2 lines ; of 

 the wings 3£ lines. 



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



Inhabits also Europe and some parts of Africa, Asia, and America. 



Gen. Bengalia, Dev. 



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



Subfam. Anthomyides, Walk. 

 Gen. Aricia, Macq. 



129. Aricia patula, Walk. See page 28. 



This may perhaps be a variety of Anthomyia quadrata, Wied. Auss. Zweijl. 



ii. 428. 14. 

 The latter inhabits Java. 



