130 WALKEB ON DTPTEEA OF ABU ISLANDS. 



Male. Black, with slightly gilded tomentum. Head gilded; frontalia 

 deep black, hardly widening in front ; thorax with three black stripes, 

 an indistinct blackish line on each side of the middle stripe ; abdomen 

 tessellated with white ; wings grey ; veins bordered with a lurid hue, 

 especially towards the costa; praebrachial vein forming a sHghtly acute 

 angle at its flexure, near which it is much curved inward, and is 

 thence straight to its tip ; discal transverse vein slightly curved inward 

 near its hind end, parted by a little more than half its length from 

 the border and from the praebrachial transverse ; alulae testaceous. 

 Length of the body 5| lines ; of the wings 9 lines. 



Subfam. Mtjscides, Walk, 

 Gen. Idia, Meigen. 



9. Idia xanthogaster, Wied. Auss. Zweifl. 11. 349. 2. 

 Inhabits also Hindostan and Java. 



10. Idia testacea, Macq. Hist, Nat. Dipt. 77. 246. 3. 

 Inhabits also Mauritius. 



Gen. MuscA, Linn. 



11. Musca obtrusa. Walk. See p. 105. 



Subfam. Anthomyides, Wal/c. 

 Gren. Aricia, Macq. 



12. Aricia viCARiA, n.s. Fwm. Fulva, subtus testacea ; capite nigro, 

 apud oculos albo ; antennis testaceis ; alis cinereis, apud costam 

 luridis. 



Female. Tawny, testaceous beneath. Head black, white about the eyes ; 

 antennae testaceous ; abdomen clothed with short black bristles ; legs 

 testaceous, tarsi piceous ; wings grey, with a lurid tinge towards the 

 costa; veins black, discal transverse vein nearly straight, parted by 

 about its length from the border, and by a little more than its length 

 from the preebrachial transverse ; alulae slightly testaceous ; halteres 

 testaceous. Length of the body 3^ lines ; of the wings 6 lines. 



13. Aricia squalens, n. s. Fam. Nigra, cinereo tomentosa; facie 

 argentea ; antennis testaceis ; thorace vittis nigris vittisque duabus 

 lateralibus latis testaceis ; abdomine obscure testaceo ; pedibus piceis ; 

 femoribus nigris; tibiis anticis testaceis; alis cinereis; apud costam 

 subluridis ; venis halteribusque testaceis. 



Female. Black, with cinereous tomentum. Face silvery white; an- 

 tennae pale testaceous, third joint long, linear, extending to the 

 epistoma ; thorax with black stripes, and on each side with a broad 

 testaceous stripe; abdomen dull testaceous; legs piceous; femora 

 black, fore tibiae testaceous ; wings grey, with a lurid tinge towards 



