BY AKTHtrR WHITE. 267 



1913. 



tarsi black, except tbree-fourtlis of the first joint, whieli is 

 yellowish. Wings large, veins very conspicuous, the region 

 surrounding the discal cross-vein suffused with brown. 



This species seems to be suVJect to considerable variation ; 

 -one of my sj^ecimens has the face black, and the thorax only 

 indistinctly striped. It can, however, in any case be easily 

 recognised by its large size and unusually robust abdomen, 

 in conjunction with its dark legs, and wings suffused centrally 

 with brown. 



This species is fairly common in the bush in the Bagdad 

 Valley, Tasmania ; it seems to have a fondness for settling 

 on dead tAvigs and undergrowth. It occurs during the month 

 of December. 



Leptogasler occidentalism Sp. no v. 



A small species having the second submarginal cell con- 

 ■siderably narrowed on the wing margin, owing to the bending 

 !upwards of the lower branch of the cubital fork ; thorax 

 greenish-black, indistinctly striped ; abdomen black, with 

 segmentations grev ; anterior and middle legs bright orange, 

 posterior pair darker. 



Length. Male, 8 mm. 



Locality. Perth, Western Australia. 



Male. Face and moustache, which is very scanty, white, 

 Antennae black. Thorax greenish-black, with indistinct traces 

 of median stripes ; sides dusted with grey. Abdomen black, 

 with the segmentations indistinctly marked witli grey. 

 Legs : Anterior and middle femora and tibiae bright orange, 

 with knees brown ; posterior femora orange brown, indis- 

 tinctly banded with darker across the middle, base white, 

 and knees black ; posterior tibiae brown, with basal half 

 whitish ; all tarsi with first joint white, excepting the ex- 

 treme end, which, with the remaining joints, is brown, with 

 segmentations darker; claws black. Wings short, the 

 second submarginal (or cubital) cell considerably narrowed 

 on the wing margin, owing to the upward bend of the lower 

 branch of the cubital fork ; the veinlet closing the second 

 basal cell meets the peduncle of the fourth posterior cell at 

 about its middle. 



This species can be distinguished from all other Australian 

 species of the genus, except L. ajiiipoda, by the contracted 

 second submarginal cell ; from L. atitipoda. which is a Tas- 

 uianian species, it can be distinguished by its smaller size, 

 stouter build, much shorter wings, more brightly coloured 

 legs, and the position of the veinlet closing the second basal 



