Falkland Islands Diptera. 389 



as the eye, yellow-orange in colour, as is the side of the face, and 

 both covered with bristly hairs [fewer hairs, hind jowls bare] ; the 

 hind head runs into the jowls smoothly and continuously [hind 

 head cut off from hind jowls by a furrow] ; post-orbital row present 

 above. 



Thorax : — the dorsum is dull grey, pollinated, and covered with 

 fine bristles; humeri greyish orange; the bristles are, humeral 

 (with accessory hairs) in a line with the two notopleurals, presutural, 

 one supra-alar, a row of 8 bordering the hind margin of thorax, 

 of which one is on the post-alar callus, two are the true prescutellars 

 (small and close together), and between the post-alar and prc- 

 scutellar is another bristle ; this is possibly the last of a true dorso- 



Fig. 1. — Oedoparea oblita. 



central row of which (1+2) others can just be seen projecting 

 somewhat among the scattered bristles [has a similar chaetotaxy, 

 but the dorso-central row is more developed, and the general cloth- 

 ing bristles are very much longer]; scutellum as tho.rax, rounded, 

 pale edged with a few scattered bristles except on the centre of the 

 disc, a pair of stout upright terminal bristles and smaller convergent 

 basal pair [no small discal bristles]. The pleura is grey with fine 

 orange pollen, mesopleura bare, a bristle below the stigma, sterno- 

 pleura with 3 bristles close to upper suture and covered with very 

 long curly hairs which are dark basally but otherwise orange [less 

 hairy on sternopleura]. The wings have a similar form to buccaia 

 in venation, structure, relative size and form, but are stouter in 

 texture, they are somewhat milky with pale veins except for a slight 

 suffusion on the cross veins. Calypters pale yellow with short 

 pale hairs. Halteres pale yellow, same in form as in buecata. 



