

, Frons. 
, Occiput. 
, Hye. 
, Femnr. 
“ass 
4 
VS. 
= — eT a : 
i a — “ 
— < : 6 
M 
F.L. 
jy VS. 
DION ar oa 

EXPLANATORY DIAGRAM, 
UM, 
Head. 
V, Vertex. 
O, Ocelli. 
Antenna, Ar, Arista. 
Thorax. Su, Suture. 
Seutellum (part of mesothorax). 
Abdomen. 
, Ist to 7th Abdominal Segments. 
Squama (the author's squamula), 
, Haltere. 
Wing. 
M.L., H.L., the front, middle and 
hind legs. 
T, Tibia, 
Tarsus (5-jointed), 
, Claw, 
Veins, 
. Costa, ; 
, Mediastinal (Auxiliary) vein. 
, First to Sixth Longitudinal veins, 
kink in @rd longitudinal yein. 
, Axillary vein, 
LM, 
Upper Marginal or Subapical Cross- 
vein (bent-up portion of 4th 
long. vein), 
Lower Marginal or Postical Cross- 
vein (bent-up portion of upper 
branch of 5th long. vein). 
Humeral Cross-vein. 
, Anterior or middle Cross-vein. 
. Lower or small Cross-vein, 
Vena Spuria. 
Cells. 
. First and Second Costal Cells. 
. Subcostal or Third Costal Cell. 
4, Marginal Cell. 
, Submarginal Cell. 
, First Posterior or Subapieal Cell. 
. Discal or 2nd Posterior Cell. 
. Third Posterior Cell. 
. Axillary Cell. 
. First Basal Cell. 
. Second Basal Cell, 
5 Anal Cell, 
, Alula, 
