iJASED ON A STUDY OF THK MALE GENITAL AUMATUKE. 



21 



lateral iiiargiu. Eclitiim or extension of the body wall (e) with very few bristles. 

 Inferior claspers {ic) relatively small and narrowed basally on both sides ; bristles 

 at the sides short. Median process {mp) a little more than twice the length of 

 the inferior claspers, gradually dilated towards the apex and of a clear horn- 

 yellow colour ; it is so highly chitinised as to resist the action of stains, and stands 

 out in marked contrast to the surrounding organs ; it is also so large that it can 

 be seen with the aid of a pocket lens only. Harpes (A) with the tips of the 

 larger process broadly dilated ; there is also a long narrow and slightly curved 

 sclerite overlapping the broader process ; these appendages are partly covered 

 by the thin membrane which protects and envelopes the penis-sheath ; extending 

 obliquely across the harpes is a band of minute spines which are strongly dilated 

 proximally. On the proximal surface of the juxta is a bilateral row of squamose 

 spines {s). The juxta in dorso-ventral view (fig. 7, ;') presents a distinctly 

 elongated, triangular outline ; but in profile (fig. 6) only one of the lateral 

 sclerites (j) forming the juxta is visible in the same focal plane as the harpe. 



Glossina longipennis, Corti. 



Genital armature of the male (fig. 

 other members of the fusca group ; 



8). Superior claspers {sc) free, as in the 

 relatively short and stout, apices rather 



Fig. 8. Male armature of Glossina longipennis, Corti ; ventral view. 



