218 THE DIPTKRA-BRACHYCERA OF TASMANIA, 



Male. Head chiefly occupied by the very large, joined 

 eyes ; face small, grey. Antenn?e with second joint light 

 brown, third black. Thorax black, with posterior margin 

 grey, the whole bearing scattered, erect, black pubescence, 

 and a few weak, posterior bristles ; scutellum brownish- 

 black, w^ith weak black marginal bristles. Abdomen grey 

 dorsally, with a row of black spots extending from the 

 second to the seventh segment; base aTid sides black ; dor- 

 sum bare, sides with long, soft, pale pubescence. Legs with 

 femora black, knees yellow; tibiae yellow, with apex black, 

 and a black ring near the base ; tarsi with first three joints 

 yello'wish, fourth and fifth black ; pulvilli yellow, ciaws 

 black. Wings hyaline, with a clearly-defined yellow-brown 

 stigma. 



Of this species I have only met with a single specimen, 

 which occurred settled on a tree trunk at Hobart, on Oc- 

 tober 5, 1912. 



52. S c I A D o c E R A, Gen. nov. (Fig. 40.) 



Wings with the basal cells short, the first and second 

 of equal length, the anal a little shorter; discal cell want- 

 ing ; cubital vein unf orked ; discal vein incomplete at the 

 base, and an incomplete veinlet reaching the margin be- 

 tween the cubital and discal veins. Antennje verv short, 

 the terminal joint large, almost c|uadrangular, and com- 

 pletely concealing the preceding joints; eyes in female 

 widely separated; tJiorax greatly arched; abdomen short; 

 legs simple. 



Fig. 40. Wing of Sciailorcia rnfoinaruldfa. 



Head placed low down below the greatly-arched thorax. 

 Proboscis concealed within the oral aperturei. Eyes in 

 female very widely separated. Antenn?e so short that 

 the terminal joint seems to lie directly against the face ; 

 it is very large, flattened, almost quadrangular, and pro- 

 vided with a thread-like arista ; the terminal joints of 

 the two antennae touch one another on their inner mar- 

 gins, and reach to the eyes on their outer margins, cover- 

 ing the face, and completely concealing the preceding 



