346 



Annals of the South African Museum. 

 MESOGOMPHUS ELPIDIUS, n. sp. 



S. Afr. Mus. : 2 , MTongosi (Zululaud, iii, iv . 1911, Jones). Mus. 

 Tervueren : 1 ? , Kapiri, Katanga (xi . 1912, Legros). 



Similar in colour to M. Hageni, but obscure markings deeper in 

 colour and more .sharply denned. 



FIG. 49. Mesogomphus elpidius, $. M'Fongosi. 

 ventral and left side view. 



Terminal segments, 



(J. Labium dull whitish ochreous. Labrum, face and frous very 

 light yellowish green, light and very diffuse brownish traces at anterior 

 margins of labrum, ante- aud postclypeus ; brownish transverse baud 

 on anterior face of vertex across the ocelli, slightly encroaching on the 

 base of frons. Vertex as in M. Hageni ; occipital plate without the 



FIG. 50. Mesogomphus elpidius, <$ . M'Fongosi. Genitals, second seg- 

 ment, left side view. 



longitudinal ridge. Thoracic pattern, Plate IX, fig. 3. Legs dull 

 ochreous ; narrow lines on femora and their ends darker brownish ; 

 internal side of tibiae, lateral side of third tibiae, tarsi and spines 

 blackish. 



Abdomen similar in form to M. Hageni, but still more slender, the 

 dilatation of terminal segments being comparatively greater, the lateral 

 foliaceous dilatations of segments 8-9 broader. Dull olivaceous, 

 markings dark ferruginous, very diffuse (both specimens rather dis- 



