ME. WALKER OK DIPTERA COLLECTED AT MAKESSAB. 123 



99. Nemor^a tenebrosa, n. s. Fosm. Cinereo-nigra, capite albido, 

 frontalibus nigris, oculis pubescentibus, palpis et antennarum articulo 

 2** rufescentibus, thorace lineis quinque nigris, scutello rufo, abdomine 

 obscure rufescente tessellis cinereis, femoribus posticis fimbriatis, alls 

 cinereis, basi costa et venarum marginibus obscure fuscis. 



Female. Cinereous black, with black bristles ; head whitish ; frontalia 

 black, slightly widening to the face, with a row of bristles along each 

 side and beyond it ; facialia bristly along most of the length ; epi- 

 stoma not prominent ; eyes pubescent ; palpi reddish ; antennae not 

 nearly reaching the epistoma ; 3rd joint linear, slender, obtuse at the 

 tip, much less than twice the length of the 2nd, which is reddish ; 

 arista stout for full half its length, much longer than the 3rd joint ; 

 thorax with five black lines ; scutellum red, black at the base ; abdo- 

 men dark reddish, slightly tessellated with cinereous ; legs black, 

 bristly; hind femora fringed with short black hairs; wings grey, 

 dark brown at the base, along the costa and along the black veins ; 

 prsebrachial vein forming a right angle at its flexure, from whence it is 

 slightly curved inward to its tip ; discal transverse vein much curved 

 inward near its base, parted by much less than its length from the 

 border and by rather less than its length from the flexure of the prse- 

 brachial ; alulae lurid-cinereous. Length of the body 6 lines ; of the 

 wings 12 lines. 



Gren. Masiceba, Maq. 



100. Masicera dotata, n. s. F(Em. Cinerea, capite albo, frontalibus 

 atris, oculis nudis, proboscide palpisque fulvis, thorace vittis quatuor 

 nigris, abdomine longi-elliptico fasciis cinereis, alis luridis angustis, 

 dimidio apicali obscure fusco, margine postico cinereo, halteribus tes- 

 taceis. 



Female. Cinereous, beset with numerous long stout black bristles ; 

 head white, clothed behind and beneath with white hairs ; frontalia 

 deep black, slightly widening towards the face, with stout bristles 

 along each side; facialia without bristles except by the epistoma, 

 which is not prominent ; eyes bare ; proboscis and palpi tawny ; an- 

 tennae nearly reaching the epistoma ; 3rd joint slightly broader to- 

 wards the tip, which is rounded, about four times the length of the 

 2nd ; arista stout at the base, very much longer than the 3rd joint ; 

 thorax with four black stripes ; abdomen elongate-elhptical, its bristles 

 stouter than those of the thorax ; a cinereous band along the fore- 

 border of each segment ; lips black, stout, bristly ; wings lurid, nar- 

 row, dark brown on the exterior half, cinereous along the hind border ; 

 veins tawny, black exteriorly; praebpchial vein extending rather 

 beyond the slightly acute angle which it forms at its flexure, much 

 curved inward from thence to its tip ; discal transverse vein undu- 

 lating, parted liy rather less than its length from the border and from 

 the flexure of the praebrachial ; alulae cinereous ; halteres testaceous. 

 Length of the body 6 lines ; of the wings 12 hues. 



