LIST OF DIPTEEA. 875 



adorned with four stripes of hoary reflections ; breast slightly co- 

 vered with hoary bloom ; seutcheon intense purple : abdomen ellip- 

 tical, bright bluish green, a little broader, but not longer than the 

 chest, bright blue at the base, adorned with white reflections, which 

 are most apparent on the under side ; hind borders of the segments 

 intense purple ; a large coppery spot on each side of the fore bor- 

 der of the third segment : legs black, clothed with black hairs and 

 bristles ; a broad pale ferruginous band round each thigh ; shanks 

 dark ferruginous ; foot-cushions pitchy : wings slightly gray ; wing- 

 ribs pitchy ; veins black ; tip cross-vein forming a very slightly ob- 

 tuse angle with the fourth longitudinal vein, a little curved inward 

 for a short part of its length, straight from thence to the tip, join- 

 ing the border a little above the tip of the wing ; lower cross-vein 

 with an almost imperceptible inward curve along half its length, 

 and having thence to the tip a very slight outward curve ; scales 

 dark gray, with tawny borders. Length of the body 4 lines ; of the 

 wings 8 lines. 

 a. Venezuela. From Mr. Dyson's collection. 



Musca Bata, n. s. JEneo-viridis, capite fulvo, scutello cyaneo, ab- 

 domine viridi basi et segmentorum marginibus posticis purpurea 

 ci/aneis, palpis fulvis, antennis ferrugineis, pedibus nigris, alls 

 limpidis. 



Body beset with a few black hairs and bristles : head tawny, 

 thickly clothed with beneath with pale yellow hairs ; epistoma 

 slightly prominent ; sides of the face fringed with bristles at the 

 base : eyes red, very large ; fore part flat, composed of very large 

 facets, and quite distinct from the other part of the eye ; sucker 

 pitchy, clothed with pale tawny hairs ; palpi tawny, slender, beset 

 with black bristles : feelers pale ferruginous, much shorter than the 

 face ; third joint full four times the length of the second, very 

 slightly decreasing in depth from the base to the tip, which is 

 rounded : chest green, slightly covered with white bloom, brassy 

 along the sutures of the segments, and indistinctly striped with that 

 colour in front ; scutcheon blue : abdomen green, obconical, shorter 

 than the chest, blue, mixed with purple at the base, and on the 

 hind borders of the segments : legs black, clothed with black hairs 

 and bristles ; foot-cushions tawny : wings colourless; wing-ribs and 

 veins pitchy ; tip cross-vein forming hardly less than a right angle 

 with the fourth longitudinal vein, curved inward for a short part of 

 the length, straight from thence to the tip, joining the border a 

 little above the tip of the wing : lower cross-vein with two slight 

 curves, the lower inward, longer than the other, which is outward ; 

 scales gray, with pitchy borders. Female. — Body more green : 



