BY FREDERICK A. A. SKUSE. 671 



b. Tip of the second longitudinal vein and tip of the posterior 

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



(No. 123). 



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

 wing than the tip of the second longitudinal vein. 



(No. 124). 



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

 tudinal vein, 



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

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



(No. 125). 



b. Tip of the second longitudinal vein and tip of the posterior 

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



(Nos. 126 to 130). 



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

 wing than the tip of the seco7id longitudinal vein. 



(Nos. 131 to 134). 



B. Halteres yellow or whitish. 



(Nos. 135 and 136). 



1. Palpi black or brown. 



(No. 135). 



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

 vein. 



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

 wing than the tip of the second longitudinal vein. 



(No. 135). 



2. Palpi yellow. 

 (No. 136). 



