!_ A. 



F.L. 



H 



H.L. 



EXPLANATORY DIAGRAM. 



H, 



F, 



Y, 



E, 



A, 



T, 



Sc, 



AB, 



i-vii, 



S, 



H, 



W, 



F.L., 



TA, 

 CL, 



..C, Costa. 



M, Mediastinal (Auxiliary) vein. 

 L 6 , First to Sixth Longitudinal veins. 

 X, kink in 3rd longitudinal vein. 

 L 7 , Axillary vein. 



Head. 



Frons. V, Vertex. 



Occiput. 



Eye. O, Ocelli. 



Antenna. An, Arista. 



Thorax. Su, Suture. 



Scutellum (part of mesothorax). 



Abdomen. 



1st to 7th Abdominal Segments. 



Squama (the author's squamula). 



Haltere. 



Wing. 



M.L., H.L., the front, middle and 



hind legs. 



Femur. T, Tibia. 

 Tarsus (5 -jointed). 

 Claw. 



UM, Upper Marginal or Subapical Cross 

 vein (bent-up portion of 4t 

 long. vein). 



LM, Lower Marginal or Postical Cross 

 vein (bent-up portion of uppc 

 branch of 5th long. vein). 

 B, Humeral Cross- vein. 

 D, Anterior or middle Cross-vein. 

 G, Lower or small Cross-vein. 

 V.S., Vena Spuria. 



Cells. 



1, 2. First and Second Costal Cells. 



3. Subcostal or Third Costal Cell. 



4. Marginal Cell. 



5. Submarginal Cell. 



6. First Posterior or Subapical Cell. 



7. Discal or 2nd Posterior Cell. 



8. Third Posterior Cell. 



9. Axillary Cell. 



10. First Basal Cell. 



11. Second Basal Cell. 



12. Anal Cell. 



13. Alula. 



