i WALKER ON DIPTERA 01? AEU ISLANDS. 



than the thorax, with a broad slightly interrupted white band on the 

 fore border of each segment, sides of the second and third segments 

 slightly ferruginous ; wings grey, veins black bordered with brown, 

 prsebrachial vein forming a slightly acute angle at its flexure, near 

 which it is much curved inward, and is thence straight to its tip, 

 discal transverse vein curved inward, parted by less than its length 

 from the border, and by rather more than half its length from the 

 flexure of the prsebrachial ; alulaj white ; halteres testaceous. Length 

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



81. Masicera? tentata, n. s. Nigra, cinereo-tomentosa, capite 

 argenteo frontalibus atris, antennarum articulo tertio basi rufo, thorace 

 quadrivittato, abdomine ?, pedibus longiusculis, alis nigricantibus pos- 

 tice cinereis. 



Black, with cinereous tomentum and with moderately stout bristles. 

 Head silvery with white hairs behind and beneath, frontalia deep 

 black, slightly widening towards the face, facialia without bristles, 

 epistoma not prominent ; antennae extending nearly to the epistoma ; 

 third joint cinereous, slender, linear, red towards the base, rounded at 

 the tip, more than four times the length of the second ; arista slender, 

 much longer than the third joint j thorax with four slender black 

 stripes j scutellum not cinereous ; abdomen wanting ; legs rather long 

 and slender ; wings blackish, cinereous hindward and at the tips, 

 veins black, pra^bracbial vein forming a very obtuse angle at its 

 flexure, from whence it is almost straight to its tip, discal transverse 

 vein slightly undulating, parted by much less than its length from 

 the border, and by a little less than its length from the flexure of the , 

 pracbrachial ; alulae large, yellowish white -, halteres piceous. Length 

 of the body 4 ? lines ; of the v/ings 7 lines. 



82. Masicera solennis, n. s. Foem. Nigra, breviuscula, cinereo-to- 

 mentosa, capite albo, frontalibus atris, thorace quadrivittato, scutelli 

 margine postico ferrugineo, abdomine subtessellato, alis cinereis. 



Female. Black, rather short, with cinereous tomentum. Head white, 

 with white hairs behind and beneath, frontalia deep black, widening 

 towards the face, faciaha without bristles, epistoma not prominent ; 

 eyes bare ; antennae almost reaching the epistoma, third joint cine- 

 reous, linear, rounded at the tip, more than four times the length of 

 of the second, arista slightly stout towards the base, much longer 

 than the third joint ; thorax with four slender black stripes ; scutellum 

 ferruginous along the hind border ; abdomen short-conical, with three 

 broad interrupted cinereous bands; legs rather short; wings grey, 

 veins black, prajbrachial vein forming a slightly obtuse angle at its 

 flexure, from whence it is almost straight to its tip, discal transverse 

 vein nearly straight, parted by much less than its length from fhe 

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

 brachial ; alulte cinereous. Length of the body 3 lines ; of the wings 

 5 lines. 



