BY ARTHUR WHITE. U3 



Female. Face yellow or yellowish white ; moustache 

 white; back of head with a row of stiff black bristles. 

 Antennae black. Thorax brown, with, usually, three 

 veiy broad, shining, dark brow^n stripes ; sides grey ; 

 scutelluni covered with grey tomentum. Abdomen un- 

 usually robust, olive-black, with sides, shoulders of seg- 

 ments, and segmentations grey ; first segment with, usually, 

 foiu' black bristles on each side, and a few white hairs. 

 Legs dark brown, with knees black ; posterior tibiae 

 whitish at base, with black and white bristles, which vary 

 considerably in different individuals; tarsi black, the first 

 joint with basal three-fourths yellowish. Wings large, 

 veins very conspicuous, the region surrounding the small 

 cross-vein usually suffused with brown. 



Male is much rarer than the female. The few specimens 

 that I have seen are considerably smaller in size, and have 

 the wings smaller and more smoky in appearance. 



Variation. Although this species has typically smoky 

 wings, yet specimens may be me^o with in which the wings 

 are perfectly clear; these may represent a distinct species, 

 but I am unable to find any satisfactory distinction. 

 Some specimens have the thorax unstriped. In Victoria 

 I have taken a specimen, probably belongiing to this 

 species, which is) only 11 mm. in length, has the thorax 

 olive-brown, and the wings clear. From New South 

 Wales, however. Dr. Ferguson has kindly sent me three 

 specimens for examination, which are quite typical. 



This species in typical specimens may be easily identi- 

 fied by the smokv wings and large robust size; in smaller 

 specimens with clear wings, however, identification is not 

 so easy, and it is necessary to rely on negative characters. 

 From L. geniculata it may be distinguished by the un- 

 handed hind femora ; from L. cestiva by the dark brown 

 instead of orange femora; from L. vernalis by the longer 

 wings and larger size; and from L. aufumnalis by the 

 darker femora, lighter thorax and abdomen, and larger, 

 size. 



L. fumipennis occurs commonly in the bush, and seems 

 to- be generally distributed. The female is the sex usually 

 met with. My dates range from November 18 to Janu- 

 ary 18. 



Leptogaster autumnalis. Sp. nov. 



Face, front, back of head, thorax and abdomen black, 

 ■without any sign of lighter colouration; femora and tibiae 

 fawn-colour, with knees black, the jDOsterior femora with a 



