20 DETEEMINATION OF SPECIES. 



Upper surface of abdomen not ao banded 

 {i.e. abdominal markings not con- 

 sisting of interrupted dark bands on 



a pale ground) 3 



3. Wings fairly dark (dull sepia-coloured), 

 palpi (except in O. tabaniformis, 



Westw.) long and slender III. Glossina fusca 



Group. 

 Wings pale (pale isabella-coloured or 



light drab), palpi short IV. Glossina brevipalpis 



Group. 



TABLES FOR THE DETERMINATION OP SPECIES. 



Glossina palpalis Group.* 



1. Dorsum of abdomen ochraceous-buff or 



buff ; third and following segments 

 exhibiting sharply defined, dark brown 

 or clove-brown, interrupted, trans- 

 verse bands fachinoides, Westw. 



Dorsum of abdomen not so marked 2 



2. Third joint of antennae pale (cream- 



buff to ochraceous-buff), clothed with 

 long and fine hair, forming a con- 

 spicuous fringe on front and hind 



margins (cp. Fig. 13, p. 36) pallicera, Bigot. 



Third joint of antennae entirely dark 

 (mouse-grey), except at extreme base 

 on outer side, and without a con- 

 spicuous fringe of long and fine hair 3 



3. Dorsal surface of abdomen dark sepia- 



brown ; median paler area on second 

 segment broad, and more or less 

 quadrate or irregular in outline ; 

 hypopygium ^ ol S buff or ochraceous- 

 buff caliginea, Austen. 



Dorsal surface of abdomen blackish- 

 brown; median paler area cuneate 

 {i.e. triangular in outline) ; hypopy- 

 gium of S grey ^:)aZpafc, Rob. -Desv. 



* Glossina fuscipcs, Newst. (see p. 29), which belongs to this Group, 

 is not included in the above Table, since the author has not yet had the 

 opportunity of studying this species. 



t See p. 13, note f- 



