July, '09] ENTOMOLOGICAL NEWS. 3IJ 



ally presents a triangular or shield shaped surface upon its 

 dorsal area in the Diptera. 



Squamae, see calypters. 



Sternopleura, the lower part of the pleura, below the ster- 

 nopleural suture. 



Sternopleural bristles, one or several bristles on the ster- 

 nopleura below and near the Sternopleural suture. 



Supraalar bristles, usually one to 4 bristles above the root 

 of the wing, between the notopleural and postalar bristles. 



Supraalar groove or cavity, a groove on the mesothorax im- 

 mediately above the root of the wing. 



Sternopleural suture, the suture below the dorsopleural su- 

 ture, nearly parallel with it and separating the mesopleura 

 from the sternopleura. 



Transverse suture, an impressed line running straight 

 across the mesonotum and terminating a little in front of the 

 root of the wing. It is more or less incomplete in the middle. 



Trichostical bristles, a fan like row on the metapleura, not 

 found in the calypterae. 



LEGS. 



Claws (ungues). 



Two chitinous hooks placed at the end of the last tarsal 

 joint on each leg. 



Coxa, the joint of the leg, which connects that member to 

 the body of the insect. 



Empodium, a median appendage on the under side of the 

 foot, between the claws, either in the form of a pad, or like a 

 bristle or a spine. 



Extensor row, a row of bristles on the tipper surface of the 

 femur. 



Femur, almost invariably the longest and stoutest joint of 

 the legs. It is the third joint counting from the body out- 

 wardly. 



Flexor row, one or more rows of bristles placed along the 

 lower surface of the femur. 



Mesal surface of the leg. That surface of the front and 

 hind legs which is naturally turned toward the body. 



