476 Miss G. Rlcardo — .1 Revision of 



brown or reddish grey, with a medium and lateral black 

 stripes, sides of thorax ashy ^,Yft\. Abdomen black, with well- 

 marked grey segmentations. Legs reddish yellow, the knees 

 of fore legs and joints of tarsi black ; the posterior femora 

 bhickish on apical half, the extreme apex red ; the posterior 

 tibiae almost wholly blackish ; the first joint of hind tarsi 

 pale yellow% black at its apex, and the other joints chiefly 

 black ; bristles of tarsi black, except on the first joint, where 

 they are yellowish. 



Leptogaster australis, ^ , sp. n. 



Type ( cJ ) and another from Townsville, Queensland 

 (F. Dodd), 1903. 



A species distinguished from L. gemculatufi, Macq., by its 

 larger size, by the reddish-brown thorax with one median 

 black stripe, and by the cross-vein closiug the second basal 

 cell joining the peduncle of the fourth posterior cell at two- 

 thirds of its length. 



Length 14 ram. 



Face covered with silvery-grey toraentum, the scanty 

 moustache pale yellow. AntenncE black, the first two joints 

 reddish. Forehead yellowish above the antennae, black at 

 the vertex. Thorax reddish brown, with greyish toraentum 

 ou dorsum, bordering the black stripe, which does not reach 

 the posterior border ; sides covered with yellowish toraentum, 

 breast reddish brown ; sciitellum same colour as thorax. 

 Abdomen obscurely yellow, covered with grey toraentum ; the 

 last three segments blackish, with very fine whitish pubes- 

 cence ; genitalia reddish ; underside blackish. Legs reddish 

 yellow, the first joint of the tarsi paler, almost white, the 

 remaining joints reddish brown; knees black and the aj)ical 

 two-thirds of the hind tibi;e arc reddish brown; tibiie with 

 scattered white bristles; pubescence on legs very slight, most 

 noticeable on the hind pair, where it is almost wholly white; 

 coxse reddish brown, with white toraentum. Illiigs hyaline, 

 tinged witli brown on the basal half; this is hardly notice- 

 able in the second male ; all cells open ; the cross-vein at or 

 beyond the middle of discal cell. Halteres yellow. 



Leptogaster dissimilis, $ , sp. n. 



Type ( ? ) and another from Stannary Hills, N. Queens- 

 land, about 3000 feet {Dr. T. L. Bancroft), 1909 ; and another 

 female from Queensland from the same collector. 



A handsome sjiecies, distinguished by the reddish-yellow 

 legs marked with black on the knees, and with the ai)ieal 

 half of the club-shaped hind femora deep black ; the apices 

 of tibiiC, the hind pair widely, black. 



