14 MR. walker's catalogue of dipterous insects 



fasciatis, pedibus testaceis, femoribus tibiisque apice tarsisque nigricantibus, 

 alia sublimpidis apice nigricantibus. 



Male. Cinereous. Head with yellowish-white tomentum, clothed beneath 

 with white hairs ; face very slightly convex towards the epistoma. Mystax 

 with a few testaceous, and with still fewer black bristles. Proboscis black, 

 slightly lanceolate, rather slender. Antenna? tawny ; 3rd joint and arista 

 black, the latter four times the length of the former which is fusiform. 

 Thorax with two brown stripes. Pectus hoary. Abdomen with a hoary 

 band on the hind border of each segment. Legs testaceous, with very few 

 black bristles ; tarsi, except at the base and tips of the femora and of the 

 tibia?, black ; hind femora and hind tibia? mostly black. Wings nearly 

 limpid, blackish towards the tips ; veins black. Halteres testaceous. Length 

 of the body 7 lines ; of the wings 14 lines. 



Malacca. 



42. Asiltts xatltascia, n. s., mas. Cinereo-niger, capite albido, mystace 

 testaceo, thoracis vittis quatuor pectoreque canis, abdomine ferrugineo, basi 

 apiceque nigris, pedibus fulvis nigro-variis, alis nigricantibus margine pos- 

 tico fusco. 



Male. Black, with a slight cinereous tinge. Head with some whitish hairs 

 beneath. Face whitish, flat. Mystax with many pale testaceous bristles. 

 Proboscis straight, slightly lanceolate. Antennae black. Thorax with four 

 slight hoary stripes. Pectus hoary. Abdomen ferruginous, black at the 

 base and towards the tip. Legs tawny ; tarsi, hind femora, and tips of the 

 posterior tibia? black ; anterior femora black above. Wings blackish, brown 

 along the hind border ; veins black. Halteres testaceous. Length of the 

 body 9 lines ; of the wings 16 lines. 



Singapore. 



43. Asilus Barium, Walk. Cat. Dipt. pt. 2. 426. 

 Mount Ophir. Inhabits also Ceylon and Sumatra. 



Gen. Ommatius, Illiger. 



44. Ommatius Pennus, Walk. Cat. Dipt. pt. 2. 469. 

 Malacca. Inhabits also Sumatra, Borneo, and Corea. 



45. Ommatius Hecale, Walk. Cat. Dipt. pt. 2. 476. 

 Singapore. 



46. Ommatitts gkacilis, n. s., mas. Nigro-fuscus, facie atra, thoracis late- 

 ribus pectoreque canis, pedibus fulvis, femoribus tibiisque apice tarsisque 

 nigris, alis sublimpidis apice cinereis. 



Male. Blackish-brown. Face flat, deep black. Proboscis black, rather slender, 

 slightly lanceolate. Antenna? black. Pectus and sides of the thorax hoary. 

 Abdomen dull black. Legs tawny ; tarsi and tips of the femora and of the 

 tibia? black. Wings nearly limpid, dark grey towards the tips ; veins black. 

 Halteres testaceous. Length of the body 6 lines ; of the wings 10 lines. 



Mount Ophir. 



