154 MR. WALKER ON DIPTERA COLLECTED IN AMBOTNA. 



Stoma, which is promiuent. Eyes bare. Palpi clavate, rather long. 

 Antennae almost reaching the epistoma ; 3rd joint linear, rounded at 

 the tip, about four times the length of the 2nd ; arista very minutely 

 pubescent, tawny and stout at the base. Thorax with three indistinct 

 ^slightly darker stripes. Abdomen elliptical, not longer than the tho- 

 rax. Legs stout. Wings grey, brownish along the costa; veins black, 

 tawny at the base ; praebrachial vein forming a very obtuse angle, end- 

 ing with the costal vein at the tip of the wing ; discal transverse vein 

 almost straight and upright, parted by much more than its length from 

 the prajbrachial transverse vein, and by very much more than its length 

 from the flexure of the praebrachial vein ; alulae with a testaceous tinge, 

 rather small. Length of the body 3i hues ; of the wings 7 lines. 

 The characters in the above description of this species will sufficiently 

 distinguish it as forming a new genus of Tachinides. 



Gen. Masiceba, Macquart. 



39. Masicera morio. Mas. Nigra, elongata, cinerascente-tomen- 

 tosa, capite albo latei-ibus auratis, frontalibus atris linearibus, oculis 

 nudis, anteunarum articulo 3° lineari apice rotundato, thorace vittis 

 quatuor nigris, abdomine longi-conico fasciis tribus albido-cinereis, 

 pedibus robustis, alls cinereis apud costam nigricantibus postice basi 

 albis, alulis albis. 



Masicera morio, Dol. Nat. Tijd. Ned. Ind. 1858. 



Male. Black, elongate, with whitish cinereous tomentum and with long 

 bristles and spines. Head with white shining tomentum, pale-gilded 

 on each side above ; frontalia deep black, linear, beset with bristles 

 along each side ; faciaUa with bristles along one-third of the length 

 from the epistoma, which is not prominent. Eyes bare. Antennae 

 reaching the epistoma ; 3rd joint linear, rounded at the tip, more than 

 four times the length of the 2nd; arista long, slender, somewhat 

 stouter towards the base. Thorax with four black stripes ; the middle 

 pair very slender. Abdomen elongate-conical ; 2nd, 3rd, and 4th 

 segments with a whitish cinereous band on the fore borders of the 

 segments. Legs stout. Wings grey, blackish along the costa, white 

 hindward at the base ; veins black, pale yellow in the white part ; 

 praebrachial vein forming a nearly right angle at its flexure, near which 

 it is curved inward and is thence straight to its tip ; discal transverse 

 vein curved inward, parted by less than its length from the border and 

 from the flexure of the praebrachial. Alulae white. Length' of the 

 body 6 lines ; of the wings 12 lines. 



40. Masicera manifesta, n. s. Fcem. Nigra, robusta, capite albo 

 lateribus auratis, frontalibus atris antice perpaulo latioribus, oculis 

 pubescentibus, antennarum articulo 3" lineari obtuso, thorace cinereo 

 vittis quatuor nigris, scutello testaceo, abdomine longi-ovato fasciis 

 tribus latis cinereis, pedibus robustis, alis cinereis, alulis albis. 



