GENUS STEGOMYIA 371 



viii. Abdominal segments unadorned. 



23. 8. brevipalpis, sp. n. Thorax unadorned, dark. Palpi of 

 (^ much shorter than the proboscis, venter pale, unhanded. 



1. STEGOMYIA NOTOSCRIPTA, Skuse ("S. A. C." p. 1738). 

 Plate xiv, fig. 1, To show decoration of thorax and head. 



Wing veins uniformly black scaled. Tarsal joints black with 

 four broad basal bands on the hind and two on each of the fore 

 and mid, sometimes a trace of a third on the latter. Thorax 

 black, elaborately adorned with fine snowy lines (vide figure). 

 Abdominal segments black with very narrow snowy basal bands 

 and triangular lateral patches and a ferruginous hinder fringe. 

 Proboscis with a broad silvery band a little beyond the middle. 



Head black, with the orbits and a triangular occipital patch snowy. 

 Palpi of ^ black with broad snowy basal bands to the last two seg- 

 ments somewhat ochreous at base ; of J , black with the apex snowy. 

 Scutellurn mouse-coloured with a single basal row of white scales and 

 a few more on the middle lobe ; pleurae and coxae elaborately marbled 

 with brown lines and snowy patches. Legs intensely black, the femora 

 and tibia ornamented with a brilliant longitudinal silvery line. Anterior 

 tarsal claws of the J , unequal and toothed, the others simple, but all 

 unequal; of the ^ toothed in all three pairs of legs, those of fore and 

 mid legs markedly unequal, those of the hind syminetrical. Length.- — 

 4'5 mm. 



Habitat. — New South Wales, September to January; Adelaide, 

 October ; Queensland, January. Appears a widely distributed Australian 

 gnat. Skuse says that the ova are deposited in boat-shaped masses of 

 300 or more and that the larvae swarm on water-butts, so that clearly all 

 Stegomyice do not deposit their eggs separately. 



2. STEGOMYIA PERISKELATA, Sp. n. 



Plate xiv, fig. 22, Cephalic appendages of S' • 



Wings densely black scaled. Tarsal joints with minute basal 

 yellowish bands to all the joints, the bands being specially 

 narrow on the hind pair. Tliorax black grounded with narrow 

 curved golden scales and numerous long black bristles. Abdomen 

 dark brown, sooty behind, with barely perceptible pale basal 

 bands and brilliant triangular snowy lateral spots. Proboscis 

 black, with a broad snowy band. 



(J. — Head white with two broad black lateral bands of black, 

 imbricated scales cutting off a large median triangular patch on the nape. 

 Proboscis spatulate black with a broad snowy band beyond the middle, 

 i'alpi equalling the proboscis in length, basal joint minute, the next two 



