44 THE WPTERA-BRACHYCERA OF TASMANIA, 



Abdomen shining black, the second segment with a broad, 

 the third with a narrow, white hindmargin. Legs with 

 femora black ; tibiae brown, with black bristles, the apex 

 black; tarsi black. Wings hyaline, the fourth posterior 

 cell contracted towards the wing margin. 



Female resembles the male very closely, but the abdo- 

 men is longer. There is little difference in the separation 

 of the eyes between the two sexes. 



Variation. The colouring of the front varies consider- 

 ably; the upper portion is sometimes dull black instead 

 of shining black, and the coloured portion may occupy 

 only half instead of two-thirds of the front. The tibiae, 

 though usually brown, are sometimes yellow, and there 

 is also considerable variation in the amount of contrac- 

 tion of the fourth posterior cell ; this is the only species 

 in which the latter character is known to vary. 



A. latifrons may be readily distinguished from the other 

 Tasmanian species by the black colouration, and the black 

 and white front. It occurs commonly through the whole 

 of the summer season, and may be met with in the bush 

 settled on the ground or on logs. The female seems to 

 be more common than the male. My dates range from 

 October 4 to February 11. 



Anabarrhynchus helvenacus, Sp. nov. 



A small, slender species with yellow wings. Frontal 

 spots indistinct; thorax grey or grey-brown, very indis- 

 tinctly striped ; femora black ; tibiae clear yellow ; wings 

 yellow. 



Length. Male, 7.5 mm. ; female, 9 mm. 



Hab. Mangalore. 



Male. Face grey. Front grey, with a pair of large, 

 indistinct, much-diffused brown spots, the whole bearing 

 long black pubescence. Proboscis black, lying close against 

 the face. Antennae with first joint grey, with black hairs, 

 second and third black. Thorax grey, with five very indis- 

 tinct brown stripes, and short black pubescence. Abdo- 

 men black, covered extensively with grey tomentum, par- 

 ticularly at the sides, and bearing a little white pubes- 

 cence; when viewed from the side the second Begmetnl 

 has a broad, and the third a narrow, white hindmargin. 

 Legs with all the femora black, kneee and tibiae dear 

 yellow, with the extreme apex of tibiro black, the whole 

 bearing black bristles; tarsi with first joint yellow at the 

 base, remainder black. Wings yellow, the veins, which 

 do not stand out so prominently as in most species of 

 Anabarrhynchutf pale yellow-brown. 



