Diptera from Port Darwin, Australia. 225 



Antennoi dark rusty brown, the first two segments covered 

 with sliort black bristles; basal angle of the third well 

 pronounced. 



Front wide, maximum breadth one-sixth that of the head, 

 sides slightly convergent anteriorly, grey with some sparse 

 hairs. Frontal callus in two parts, namely a large tumid 

 shiny plug filling the whole front just above the antenna, 

 and a short somewhat ill-defined streak above. Eyes quite 

 bare. 



The denuded scutum is dark rusty brown inclining to 

 black; scutellum reddish brown. 



Legs: first pair black, except the proximal two-thirds of 

 the tibia?, which are reddish brown ; the other two pairs are 

 reddish yellow, except the tarsi and tip of the tibice, which are 

 dark brown. 



Wings iiyaline, with a long dark brown spot at the distal 

 end of the first longitudinal vein; the root of the veins is 

 light brown, the rest dark brown. The upper branch of the 

 third longitudinal vein is angulated, a sliort blind branch 

 running inwards from the an^le. HaJteres reddish brown. 



^\\Q ahdo7ne7i (which is badly rubbed) appears dorsally to be 

 seven-striped — three light stripes alternating with four black ; 

 the middle stripe, which is whitish, is strikingly distinct, the 

 two dorso-lateral light stripes are not so distinct. 



Tahanus hadius, sp. n. 



Also a smallish species, length 11 mm. 



Four females. 



Face grey, with long white hairs ; paljis about nine-tenths 

 the length o£ the proboscis, light brown frosted with white ; 

 proboscis black, rather slender for a Tabarais. 



Antennce brown, black at the tip ; first two segments with 

 stout black hairs. 



Front uniformly narrow (sides paralltl), about one-ninth 

 the breadth of the head, dirty yellow with numerous short 

 black hairs. Frontal callus shiny black, racquet-shaped 

 with the handle slender and not always well defined. Eyes 

 quite bare. 



Scutnm and scutellum black, with a greyish dust and 

 scattered golden and black hairs. 



• Legs: first pair black, except tlie proximal half to two-, 

 thirds of tibia? which are reddish brown ; second and third 

 pairs reddish brown, tarsi black. 



Wings hyaline, with a long very light brown spot at the 

 distal end of the first longitudinal vein ; veins dark brown, 

 Ilalteres reddish brown. 



