670 DIPTERA OF AUSTRALIA, 



B. Cross-vein situated at the middle of the first longitudinal 

 vein 



b. Tip of tlie second lo7igitudinal vein and tip of the posterior 

 branch of the fork equally near the apex of the wing. 



(N6. 100). 



C. Cross-vein situated beyond the middle of the first longi- 

 tudinal vein. 



a. Tip of the second longitudinal vein nearer the apex of the 

 wing than tlie tip of the posterior branch of the fork. 



(Nos. 101 to 104). 



t Thorax with two longitudiiial rows of hairs. 



(Nos. 101 and 102). 



tt TJiorax with three longitudinal rovis of liairs. 



(Nos. 103 and 104). 



b. Tip of the second longitudinal vein and tij? of tlve posterior 

 branch of tlie fork equally near the apex of the wing. 



(Nos. 105 and 106). 



c. Tip of the jyosteHor branch of the fork nearer the apex of the 

 wing than the tip of the second longitudinal vein. 



(Nos. 107 to 122). 



t Thorax with two longitudinal rows of hairs. 



(Nos. 107 to 110). 



ft Thorax with three longitudinal rows of hairs. 



(Nos. Ill to 122). 



2. Palpi yellow. 



(Nos. 123 to 134). 



B. Cross- vein situated at the middle of the first longitudinal 

 vein. 



