150 THE DIPTERA-BRACHYCERA OF TASMANIA, 



as L. antipocla should be L. (jtniculata (which name has 

 priority), whilst that given as L. geniculata is a nem species, 

 which I now describe under the name L. autumnali^. 



This makes the Tasmanian species at present distin- 

 guished hve in number. 



Table of the Tas/nanian Species of Lepfog aster. 

 1. Hind femora banded; second submarginal cell 

 slightly contracted at wing margin. 



Geniculata, Macq. 

 Hind femora not banded; second submarginal 

 cell not in the slio'htest contracted at wing mar- 



9 



gin. ^ 



12. Face, front, back of head, thorax and abdomen 



entirely black Autumnalis, Sp. nov. 



Colouration not entirely black. 3 



3. Hind femora bright orange ; wings short. 



Estiva, White. 

 Hind femora brown. 4. 



4. Very small species; length of wing 9 5.5-6 mm. 



Always clear. Vernalis, White. 



Large species; length of wing $9-10 mm., usually 

 smoky. * Fumipennis, White. 



Leptogaster geniculata, Macq. 



Syn. Leptogaster 7:(f^/c/7?/«s, Walk. 

 L. antipoda, Bigot. 



Face and front white; thorax brown; abdomen brown 

 or grey; legs fawn-coloured, the posterior femora with a 

 dark brown band ; wings with the second submarginal 

 cell slightly contracted towards the wing margin. 



Length. Male, 8 mm. ; female, 10 mm. 



Length of wing. Male, 5 mm. ; female, 7 mm. 



Hab. South Bridgewater. (Also in Victoria and New 

 South Wales). 



Female. Face and front w^hite; moustache wdiite, 

 scanty. Eyes closely approximated. Back of head grey. 

 Antennae with tho first two joints dark reddish, third 

 black. Thorax bro'wn, indistinctly striped. Abdomen 

 brown, with pale segmentations, practically bare. Legs 

 fawn-coloured, with knees very narrowly black ; posterior 

 femora indistinctly banded with brown, and posterior 

 tibiae with apex dark brown; tarsi dark brown, with first 

 joint white at the base. Wings shining, tinged with 

 brown, the second submarginal cell slightly contracted 

 towards the wing margin. 



