374 LIST OF DIPTERA. 



shanks towards the tips, and feet, clothed with black hairs ; claws 

 black ; foot- cushions dark tawny ; hind thighs not thick nor armed 

 with teeth, but slightly curved ; shanks, especially the fore pair, 

 slightly curved : wings colourless, slightly tawny at the base and on 

 the fore borders, and along the borders of the veins ; tips and hind 

 borders till near the base slightly gray ; wing-ribs and poisers pi- 

 ceous ; veins black. Length of the body 17 lines ; of the wings 30 

 lines, 

 a. Brazil. 



Laphria Tectamus, n. s., fem. Nigra, capite pectoreque canis, tho- 

 racis vittis quatuor canis, abdomine cyaneo, antennis nigris, pedi- 

 bus nigro-cyaneis, alis limpidis venis fasco subnebulosis. 



Body black : head a little narrower than the chest, covered with 

 hoary lustre, and thickly clothed with long hoary hairs ; two long 

 tawny bristles on the tubercle of the eyelets ; clypeus very prominent, 

 armed with long black bristles : eyes bronze-black ; a very small 

 part of the front is flat, and has larger facets, but the boundary line 

 between the two parts is tolerably distinct : lip black, rather short, 

 clothed at the base with long white hairs and at the tip with short 

 piceous hairs ; tongue piceous, clothed beneath with ferruginous 

 down : feelers black ; first joint linear, thickly clothed with hoary 

 hairs ; second joint slightly club-shaped, beset with a few black 

 bristles, piceous at the tip, narrower than the first joint and hardly 

 more than half its length ; third joint spindle-shaped, rather longer 

 and broader than the first and the second joints : chest covered with 

 hoary down, which has a silvery lustre on four irregular stripes, be- 

 set on each side and behind with black hairs and bristles : breast 

 hoary and clothed with hoary hairs : abdomen blue, shining, rather 

 thickly clothed with very short black hairs, narrower than the chest 

 and much less than twice its length ; segments from the first to the 

 third hoary above and clothed with long hoary hairs, piceous be- 

 neath : legs dark blue ; thighs and shanks clothed with hoary hairs 

 and beset with a few black bristles ; feet black, beset with black 

 bristles ; claws black ; foot-cushions tawny : wings colourless ; lon- 

 gitudinal veins from the disk to the border of the wing slightly 

 clouded with brown ; wing-ribs and veins black ; poisers piceous. 

 Length of the body 10 lines ; of the wings 20 lines. 



a. Port Essington. From Mr. Gould's collection. 



