The Odouata or 



<,f ,SW/A Africa. 



313 



Ventral surface dull reddish ochreous, whitish pruinose. Legs black, 

 external side of tibiae and tarsi broadly and conspicuously yellowish. 

 Abdomen very slender, dorsuin bronzy black, bluish pruiuose on seg- 

 ment 1, basal half of 2, basal two-thirds of 8 and basal half of 9 ; 

 narrow, dorsally interrupted terminal rings on segments 1 to 5 reddish 

 ochreous ; ventral surface reddish ochreous. Appendages (Text-fig. 30) 

 obscure. A* proximal to Cuq in hind wing. Wings slightly tinged 

 with yellowish grey ; pterostigma reddish, costal-distal angle acute. 



9 Dorsal surface of head olivaceous ; black border of postocular 

 spots reduced to narrow and slightly incomplete anterior and posterior 

 lines. Prothorax oblivaceous, the impressed lines rather narrowly 

 black ; posterior lobe erect, produced in the middle in a nearly semi- 

 circular projection ; styles comparatively long, about one-third the 



FIG. 30.- Pseudagrion Sjostedti, $. Lualaba River. Appendages, 



right side and dorsal view. 



length of prothorax, depressed, narrow, slightly divergent. Thoracic 

 dorsum olivaceous with the merest trace of a reddish shade ; narrow 

 black lines on median and humeral sutures, the latter slightly irregular 

 and shortly interrupted near the fourth. Sides and ventral surface 

 dull ochreous ; black dots in dorsal end of first and second lateral 

 sutures. 



Legs ochreous, lateral surface of femora and internal surface of 

 tibiae edged with black. Abdomen long and slender ; ochreous or 

 olivaceous, a black dorsal baud of rather broad lanceolate stripes 

 interrupted at anterior ends of segments 3 to 7 ; terminal dilatations 

 of black on same segments to almost ventral margin ; 8 black on 

 dorsum, 9 with a broad basal triangular black spot, 10 olivaceous. 

 Wings as in male, pterostigma greyish ochreous. 



(J, Abel. 35, hchr. 22-5 mm. (Lualaba). ? , 32, 21 (Gold Coast). 



