20 MR. WALKER'S CATALOGUE OE DIPTEROUS INSECTS 



talibus atris, thoracis vittis quatuor interruptis nigris, scutelli margine ab- 

 dominisque fasciis canis, alis subcinereis. 



Female. Cinereous, rather short and broad. Head hoary, silvery-white above 

 and in front ; frontalia deep black, slightly widening from the vertex to the 

 antenna?; facialia without bristles ; epistoma hardly prominent. Antennae 

 extending to about three-quarters of the length of the face ; 3rd joint 

 linear, slender, rounded at the tip, about twice the length of the 2nd ; 

 arista stout for about half its length, very much longer than the 3rd joint. 

 Thorax with four slender interrupted black stripes ; scutellum with a hoary- 

 border. Abdomen black, obconical, hardly longer than the thorax ; a broad 

 hoary band on the fore border of each segment. Wings slightly greyish ; 

 veins black ; prsebracbial vein forming an almost right and rather well- 

 defined angle from whence it is slightly curved inward to its tip ; discal 

 transverse vein hardly curved inward, parted by rather less than its length 

 from the border and from the flexure of the prsebracbial. Alula? white. 

 Length of the body 4 lines ; of the wings 8 lines. 



Mount Ophir, at the height of 4000 feet. 



Gen. Masicera, Macquart. 



68. Masicera tomentosa, Macq. Dipt. JExot. Suppl. 2. 

 Mount Ophir, at the height of 40C0 feet. 



69. Masiceea vicaeia, n. s., fcem. Nigra, longiuscula, capite albo, frontali- 

 bus atris, thoracis vittis quatuor, lateribus scutello abdominisque fasciis 

 duabus latis interruptis canis, alis cinereis. 



Female. Black, rather long. Head white, with short white hairs beneath 

 and behind ; frontalia linear, deep black ; facialia without bristles ; epistoma 

 not prominent. Eyes pubescent. Antennae extending nearly to the epi- 

 stoma ; 3rd joint linear, slender, slightly rounded at the tip, about four times 

 the length of the 2nd ; arista rather stout for full one-third of the length 

 from the base, very much longer than the 3rd joint. Thorax with four 

 hoary stripes ; sides and scutellum hoary. Abdomen elongate-obconical, 

 much longer than the thorax, with two broad interrupted hoary bands. 

 Legs stout. Wings grey ; veins black ; prsebracbial vein forming a rather 

 obtuse angle at its flexure, from whence it is slightly curved inward to its 

 tip ; discal transverse vein undulating, parted by very little less than its 

 length from the border and from the flexure of the prsebrachial. Alulse 

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



Singapore. 



Gen. Eurioaster, Macquart. 



70. Eueigastee mttscoIdes, n. s., foem. Nigra lata, capite albido, frontali- 

 bus nigris, palpis testaceis, thorace cano nigro-quadrivittato, scutelli apice 

 fulvo, abdomine cano-fasciato, alis cinereis apud costam fuscescentibus. 



Female. Black, broad, with long bristles. Head whitish ; frontalia black, 

 linear ; facialia without bristles ; epistoma not prominent. Eyes pubes- 

 cent. Palpi testaceous. Antennse extending to the epistoma; 3rd joint 

 linear, rounded at the tip, full four times the length of the 2nd ; arista 



