112 mPTERA OF AUSTRALIA, 



of yellowish hairs ; sciitellum paler, villose ; pleurfe darker than 

 the scutellum, pale brownish- red. Halteres greyish, the knob 

 much darker than the stalk. Abdomen brownish-red, the last two 

 or three segments lighter, with a yellowish pubescence. Legs 

 pinkish-yellow, joints slightly tipped with brownish-red. Wings 

 hyaline, thickly covered with a rsomewhat long and bent pubes- 

 cence, and having a margaritaceous reflection. Veins pale 

 brownish. Costal very strong, thickly haired ; first and second 

 longitudinal veins paler than the costa, second longitudinal vein 

 reaching the wing-margin beyond its tip ; cross-vein pale, but 

 distinct ; third longitudinal vein becoming paler towards its end, 

 though visible throughout its length ; no anterior branch. (Descrip- 

 tion drawn from dried specimen). 



Hob. — Middle Harbour (Skuse) and Woronora (Masters). 

 Ohs. — The structure of the antennae, palpi, and ovipositor seems 

 to exhibit the closest approach to Hormomyia. The wing is in 

 shape very much like that of Asynapta pectora/is figured by 

 Wiunertz (Linnaea Entomol. viii., 1853); the venation, however, 

 is similar to that ordinarily seen in the wing of Diplosis, but 

 wanting an anterior branch to the third longitudinal. 



Sub-genus 7. Chastomera, sub-gen. nov. 

 First longitudinal vein very wide of the costa ; second longitu- 

 dinal vein reaching the margin beyond the apex of the wing ; 

 cross-vein long, a little oblique, situated a short di.stance from the 

 tip of the first longitudinal vein ; third longitudinal with no trace 

 of an anterior branch (PI. ii., fig. 11). Antennaj in the 9 pedicelled, 

 verticillate. 



64. Chastomera bella, sp.n. 



9. — Length of antennae 0*070 inch ... 1-77 millimetres. 



Expanse of wings 0-UOx 0-050 ... 3-55 x 1-27 



Size of body 0-130 xO-025 ... 3-30x0 62 



Antennso half as long as the wings, 2- -t- 14-jointed; basal joints 

 light reddish-brown ; second basal joint almost globose ; flagellar 

 joints niveous, almost pyriform, with numerous whozds of hair, 



