14. ROBERT NEWSTEAD—A REVISION OF THE TSETSE-FLIES (GLOSSINA), 
side and the armature extended by the pressure of the brush in the same way as 
when a dorso-ventral mount is required, as if the abdomen is flattened dorso- 
ventrally in the first instance, it is a most difficult matter to flatten it in the 
opposite direction subsequently. 
Caution.—Do not use a brush of any kind to manipulate the preparation while 
it is in the potash—the hairs will shrivel in this re-agent. 
Synopsis of the Species of Glossina. 
Group I (Fusca Group). Large species, length exclusive of proboscis 
102-12 mm. 
A. Thorax with the usual longitudinal markings more or less distinct. 
Palpi relatively long and thin. Thorax russet brown, markings distinct, 
areas enclosed by the curved lines becoming gradually paler out- 
wardly. Third segment of antennae clothed with very short 
pubescence. Harpes of male with a strongly serrated margin ; 
median process not extending beyond the inferior claspers. 
1. fusca, Walk., p. 15. 
Palpi as in 1. Thorax smoky brown, pale markings sharply and 
clearly defined. Third or terminal segment of antennae clothed with 
very long pubescence, and with apex strongly recurved. Harpes of 
male not serrated ; median process projecting moderately beyond the 
inferior claspers. 2. nigrofusca, Newst., p. 17. 
Palpi relatively short and stout. Thoracic markings not very clearly 
defined. Third segment of antennae with very short pubescence. 
Median process in the armature of the male more than twice the 
length of the inferior claspers ; harpes not serrated. 
3. brevipalpis, Newst., p. 19. 
B. Thoracic markings reduced to spots. 
Thorax with four (sometimes six) dark brown oval spots, the four 
larger ones arranged ina parallelogram. Harpes of male clothed with 
large squamose spines. 4. longipennis, Corti, p. 21. 
Group II (Palpalis Group). Hind tarsi all dark. Length 7-95 mm. 
Thorax, legs and abdomen spotted. 5. maculata, Newst., p. 22. 
Abdomen very dark brown or blackish brown, with a small median pale 
triangular area on second segment, extending distally as a very narrow 
stripe. Inferior claspers of male with a long broad stem to the foot-like 
terminal process; superior claspers straight, rapidly narrowing distally 
and terminating in a conical point. 6. palpalis, R. D., p. 22. 
Similar to G. palpalis, “but browner and somewhat larger . . . pale 
area on second segment broad and more or less quadrate or irregular in 
outline . . . dorsum of seventh abdominal segment . . . often 
cream-buff.”* Superior claspers of male with a terminal tooth-like 
extension one-third the length of the clasper. 7. caliginea, Aust. p. 23. 
* Austen, Bull. Ent. Res., I., p. 294 (1910). 
