558 Dr. 0. P. Alexander on 



two fleshy pleural appendages; gonapopliyses and penis- 

 guard Tonning a complicated mass that projects beyond the 

 level of the pleural appendages. 



Male. — Lengtii aljout 4 mm.; wing 4 mm. 



Hostrum whitish ; palpi brown. An' en me dark brown ; 

 flagellar segments elongate, clothed with a long erect 

 pubescence and a few long verticils. Head dark grey. 



Pronotum white. Mesonotal prsescutum dark brown 

 with a sparse pollen ; scutal lobes dark brown, the median 

 area and caudal margin of the lobes yellow ; scutellum dark 

 brown anteriorly, broadly margined with light yellow ; 

 postnotum dark brown, sparsely pruinose. Pleura with a 

 broad white ventral stripe; a conspicuous greyish-brown 

 area on the mesepisternum, the mesepimeron pale. Meso- 

 sternum biown, sparsely pruinose. Halteres pale brown, 

 the extreme base of the stem paler. Legs with the coxre 

 obscure yellow, the fore coxae and base of middle coxse 

 darker ; trochanters biownish testaceous ; remainder of legs 

 brown, the tips of the femora indistinctly darker. Wings 

 rather broad, strongly tinged with greyish, the stigma very 

 faintly indicated ; veins brown. Venation : Sc of moderate 

 length, Sci extending to about opposite two-fifths the length 

 of the long sector, Sc^ a little more than its own length 

 from the tip of Sci ; Rs long, straight, with four macro- 

 trichise, only the extreme base arcuated; cell M^ trumpet- 

 shaped ; cell 15/ M.2 closed ; basal dedection of Cui imme- 

 diately before the fork of M. 



Abdomen dark brown ; sternites paler. Male hypopygium 

 with the pleurites stout, the caudo-lateral angles produced 

 caudad into stout fleshy lobes ; two pleural appendages, 

 both pale ; the largest appendage is fleshy, a little longer 

 than the pleural lobe but more slender, the surface with a 

 few strong setse, the tip with a very strong and powerful 

 bristle ; second pleural appendage small, triangular or 

 conical in outline. Penis-guard and gonapophyses forming 

 a large complicated mass that projects beyond the level of 

 the pleural appendages, the guard curved, the extreme tip 

 running out into a spine, the apophyses forming a large 

 shield at the apex, the angles produced laterad into obtuse 

 triangular points. 



Hab. North Queensland. 



Holotype, S , Gordon vale, September 1920 {A. P. Dudd). 



"Ex scrub." 



Gonomyia terra-regince is closest to the type of the sub- 

 genus, G. (L.) skusei, Alex, {gracilis^ Skuse, preoccupied), 

 diti'ering in the small size and broad wings. 



