LIST OF DIPTERA. 861 



lower cross-vein with two very slight curves, the lower inward, the 

 upper outward ; scales white, with pale yellow borders. Length of 

 the body 6 lines ; of the wiugs 16 lines. 



a. New Holland ? 



Dexia retusa ? Musca retusa ? Fair. Ent. Syst. iv. 316, 15. Syst. 

 Antl. 288, 22. Wied. Auss. Zweif. ii. 420, 64. Mas. Viri- 

 dis, capite fulvo, thorace vittis quatuor <sneis, abdomine mneo-vi~ 

 ridi, vitta el segmentorum marginibus posticis nigris, palpisful- 

 vis, antennis ferrugineis, pedibus nigris, tibiis nigro-ferrugineis, 

 alis limpidis. 



Body clothed with black hairs and bristles : head bright tawny : 

 crown pitchy, with a broad, many-furrowed, ferruginous stripe be- 

 tween the eyelets and the feelers ; epistoma prominent; sides of the 

 face fringed with bristles for one-third of the length from the base : 

 eyes pitchy ; fore part nearly flat, its facets very small : sucker 

 black, clothed with yellow hairs ; palpi tawny, beset with short, 

 black hairs : feelers pale ferruginous, much shorter than the face ; 

 third joint linear, rounded at the tip, more than twice the length of 

 the second joint; bristle black, downy, much more than twice the 

 length of the third joint, its second joint short, but longer than the 

 first : chest and breast bright green, the latter clothed with tawny 

 hairs ; fore part of the chest adorned with four brassy stripes ; hind 

 part and scutcheon bluish green : abdomen obconical, brassy green, 

 a little broader, but not longer than the chest ; a narrow black band 

 on the hind border of each segment, and a broader black stripe 

 along the back ; no furrow nor notch at the tip : legs black, clothed 

 with black hairs and bristles ; shanks very dark ferruginous ; foot- 

 cushions tawny ; wings colourless ; a dark brown spot near the base 

 which is tawny ; wing-ribs and veins ferruginous ; veins black to- 

 wards the tips ; tip cross-vein forming a very slightly obtuse angle 

 with the fourth longitudinal vein, very slightly inclined inward near 

 the base, straight from thence till near the tip, where it is almost 

 curved outward ; lower cross-vein with two extremely slight curves, 

 the lower inward, the upper outward ; scales tawny. Length of the 

 body 6 lines ; of the wings 16 lines. 



a. New Holland. 



4f3 



