160 INSECTA SAUNDEBSIANA. 



Thereva hebes, Mas. 



Nigra, alho-hirta, antennis pedibusque nigris, femoribus cinereis, tarsis 

 bast tibiisque fulvis, alis sublimpidis. 



Body black, thinly clothed with hoary hairs : head beneath and breast 

 gray, clothed with white hairs: mouth black: third joint of the feelers 

 slightly tapering from the base towards the tip : abdomen tapering from the 

 base to the tip, a little narrower and much longer than the chest, its sides 

 clothed with white hairs : legs black, beset with black bristles which are 

 mostly on the shanks ; hips and thighs tinged with gray, clothed with 

 hoary hairs ; shanks taivny with black tips ; feet tawny at the base ; foot- 

 cushions dark tawny : wings almost colourless ; wing-ribs pitchy ; veins 

 black, some of them tawny at the base and along the fore border ; poisers 

 black. Length of the body 4 lines ; of the wings 7\ lines. 



Tasmania. 



Thebeva inconspicua, Mas. 



Nigro-cinerea, antennis fedibusque nigris, femoribus canis, tarsis basi ti- 

 biisque fulvis, alis subcinereis. 



Body black : head beset behind with black bristles, clothed beneath 

 with hoary hairs, adorned with a covering ivhich is taivny above, hoary be- 

 neath : sucker pitchy with a dark tawny tinge : feelers black ; third joint 

 suddenly tapering towards the tip : chest clothed with short black hairs : 

 breast tinged with gray, clothed v)ith hoary hairs : abdomen very slightly 

 tapering from the base till near the tip, which is conical, much longer than 

 the chest, grayish-hoary and clothed ivilh hoary hairs on each side ; hind 

 borders of the third and fourth segments tawny, which hue is perhaps only 

 occasional: legs black, beset with black bristles which are mostly on the 

 shanks ; hips and thighs tinged with hoary, clothed with whitish hairs ; 

 shanks taivny tvith black tips ; feet tawny towards the base ; foot-cushions 

 dark tawny: wings slightly gray ; wing-ribs and veins tawny ; veins black 

 towai'ds the tips ; poisers tawny with pitchy knobs. Length of the body ^h 

 lines ; of the wings 7i lines. 



New South Wales. 



