152 THE D1PTERA-BRACHY(;ERA OF TASMANIA, 



This species occurs somewhat sparingly amongst long 

 grass on greenstone hills. My dates range from January 

 12 to February 1. 



LePTOG ASTER VERNALIS, White. 



A very small, delicate spt^cies, with short wings. Thorax 

 brown or grey, striped or unstriped ; abdomen black or 

 brown; legs brown, with base of posterior femora and 

 tibiae whitish. 



Length. Male, 7.5 - 8 mm. ; female, 9 - 10.5 mm. 



Leng-th of wing. Female, 5.5 - 6 mm. 



Hab. Bagdad Valley. 



Male. Face and moustache white. Antennae black. 

 Front pale yellowish. Thorax brownish, with one median 

 and two lateral broad brown stripes, which occupy the 

 greater part of the dorsal surface ; sides and scutellum 

 pale grey. Abdomen black, with segmentations indistinctly 

 paler ; the first segment with a few Avhite bristles on 

 each side. Legs brown, with knees darkened ; posterior 

 femora and tibiae whitish at the base, the latter with 

 white bristles' ; tarsi with basal half of first joint white^ 

 remainder brown. Wings very short, clear, veins black. 



Feinalft much larger than the male. Thorax brown, 

 indistinctly striped. Abdomen dark olive-brown. 



This species agrees with L. cestiva in having very small 

 short wings, but is distinguished from that species by 

 the brown instead of bright orange femora, and by its 

 smaller size. From the other Tasmanian species* it is dis- 

 tinguished by its very small short wings and small size. 

 It most closely resembles clear-winged specimens of 

 L. famipenn/s, but in case of doubt the small short wings 

 distinguish it. 



L. vervaJis occurs somewhat sparingly amongst long 

 grass or settled on low vegetation. My dates range from 

 November 9 to Januai^ 12. 



Leptogaster fumipennis. White. 



A large robust species. Thorax brown with, usually, 

 three broad brown longitudinal stripes ; abdomen black, 

 with sides and segmentations grey; femora very dark 

 brown; wings large, veins very conspicuous, and usually 

 suffused with brown round the small cross-vein. 



Length. Male, 12 mm.; female, 13-15 mm. 



Length of wing. Female, 9-10 mm. 



Hab. Generally distributed. (Also in Victoria and 

 New South Wales). 



