ON STRUCTURE 



133 



that which immediately follows the regional 

 constriction, which occurs between the pro- 



Fia. 28. 



a Head. 



i Antennae. 



2 Ocelli. 



a 3 Compound eyes. 



6 1 Prothorax. 



6 2 Scutum of Mesothorax. 



63 ScuteUum of Mesothorax. 



W Post-Scutellum of Metathorax. 



6 s Propodeum. 



ci c 2 , etc., Segments of Abdomen. 



rfi Coxa. 

 d 2 Trochanter. 

 d s Femur. 

 d 4 Tibia. 

 d!5 Tarsi. 



dfi Calcaria or Spurs. 

 d7 Unguiculi or claws. 

 d8 Pulvillus. 

 Front wing. 



1 Costal nervure. 



2 Post Costal nervure. 



3 Median uervure. 



4 Posterior nervure. 



5 Basal nervure. 



6 Cubital nervure. 



10 1st Recurrent nervure. 



11 2nd Recurrent nervure. 



/. Hind wing. 



7 Anterior nervure. 



8 Median nervure. 



9 Posterior nervure. 



Cells. 



A Marginal. 

 B Upper basal. 

 C Lower basal. 

 D 1st Submarginal. 

 E 2nd Submarginal. 

 F 3rd Submarginal. 

 G 1st Discoidal. 

 H 2nd Discoidal. 

 7 3rd Discoidal. 

 J 1st Apical. 

 ' K 2nd Apical. 



