NOMENCLATURE OF EXTERNAL STRUCTURE. 11 



Y^ Proboscis (ensheathed in the palpi }■ 



Head. 



^.,^ Sculellumjpartofrnesothorax) 



Tarsus \ 

 (5 Jointed.) J 



Fig. 7. 

 Diagram showing iiomenclatme of external characters of Glossina, used in description. 



Longitudinal Veins. 

 I". Auxiliary vein. 

 I. First longitudinal ve 

 II. Second ,, 



III. Third 



IV. Fourth ,, 

 V. Fifth 



VI. Sixth 



Veins and Cells in the Wing. 



Transverse Veins. 

 A. Anterior transverse vein. 

 11. B. Posterior „ ., 



0. Anterior basal ,, ,, 



D. Posterior „ ,, :, 



Cells. 

 I', 1*, l"-". First, second, 

 and third costal cells. 



2. Marginal cell. 



3. Sub-marginal cell. 



4. Discal cell. 



5. 6, 7, First, second, and 

 third posterior cells. 



8. Anterior basal cell. 



9. Posterior ,, ,, 

 10. Anal cell. 



Note —The frontal stripe is the strip of coloured integument running down the centre 

 of the front (the space between the eyes), from the ocelli to the base of the antennae. 



