10 MR. P. WALKER ON DTPTERA COLLECTED AT 



capite argenteo, frontalibus atris, thorace non vittato, abdomine nigro 

 fasciis tribus interruptis splendidissime purpurascenti-cyaneis, tibiis 

 posticis fimbriatis, alis cinereis basi nigris. 

 Male. Dark purplish blue; head with silvery white tomentum; fron- 

 talia deep black, widening in front ; antennae black ; arista hardly 

 pubescent ; thorax not striped ; abdomen black, with three interrupted 

 brilliant purplish-blue bands ; 2nd band narrower than the 1st and 

 than the 3rd, excavated on each side of the hind border, 3rd band 

 apical, very broad ; legs black ; hind tibiae fringed ; wings cinereous, 

 black at the base ; praebrachial vein forming a rounded, obtuse angle 

 at its flexure, hardly curved inward from thence to its tip ; discal 

 transverse vein hardly undulating, parted by little more than one- 

 fourth of its length from the border, and by hardly more than half 

 its length from the flexure of the praebrachial, which, like it, is very 

 near the border. Length of the body 7 lines; of the wings 16 lines. 



Gen. Gymnostylia, Macq. 



31. Gymnostylia luteicornis, n. s. Foem. Nigra, cinereo-tomen- 

 tosa, frontalibus atris perangustis, palpis testaceis, antennis luteis, 

 thorace vittis quatuor nigris, abdomine fulvo fusiformi macula basali 

 trigona, pedibus fulvis longiusculis, alis cinereis apud venas fuscescente 

 subnebulosis. 



Female. Black, with cinereous tomentum; head with bristles along 

 each side of the frontalia, which are deep black, linear and very 

 narrow ; palpi testaceous ; antennae luteous, 3rd joint short ; arista 

 bare, slender ; thorax with four slender black stripes ; pectus hoary ; 

 abdomen tawny, fusiform, a little longer and narrower than the thorax, 

 with a black triangular spot at the base, and with black spines at the 

 tip; legs tawny, rather long and slender; tibiae darker than the 

 femora ; tarsi black ; wings cinereous, very slightly brownish-clouded 

 along the veins ; veins black, tawny at the base, praebrachial vein 

 forming a very obtuse angle at its flexure, almost straight from thence 

 to its tip ; discal transverse vein almost straight, parted by a little less 

 than its length from the border, and by a little more than its length 

 from the flexure of the praebrachial ; alulae white. Length of the 

 body 4 lines; of the wings 7 lines. 



Subfam. Sarcophagtdes, Walk. 

 Gen. Sarcophaga, Mcigen. 



32. Sarcophaga mendax, Walk. Sec Vol. IV. p. 132. 



Subfam. Muhcides, Walk. 

 Gen. M i sca, Linn. 



33. Muscfl cosul.s, Walk. See Vol. V. p. 15.9. 



