344 



Annuls of the South African Museum. 



MESOGOMPHUS HAGENI (St'lys, 1870). 



S. Afr. Mus. : 1 cJ, 1 9, Waterval, Transvaal (3, 14 . xi . 1899) ; 

 1 9, Dunbrody, Cape Colony (G . iii . 1912). Brit. Mus.: 1 , N.E. 

 Rhodesia, Mid. Luangwa, 13-1800 ft. (23-31 . viii . 1910, S. A. Neave). 

 Mus. Tervueren: 1 9, Bukama (17 . vii . 1911, Dr. Bequaert). Mus. 

 Rothschild, Triug : 1 ? Biskra. Coll. Ris : 1 <J, 2 9 , River Errer, 

 Harrar, Abyssinia (vi, vii . 1911, Kristensen) ; 1 <$ , Eritrea (/</.); 

 1 <J, Tozeur, Tunisia (10 . v . 1913, Dr. A. v. Schulthess). 



Dull olivaceous, probably light and rather pure green on head and 

 thorax in living specimens ; markings light and somewhat dull ferru- 

 ginous, slightly variable individually in depth of colour and extent. 



FIG. 46. Mesogomphus Hageni, . Waterval. 

 ventral and left side view. 



Terminal segments, 



$ . Labium whitish. Labrum, face, frous, vertex and o-scipital plate 

 light green, the only obscure marking being a transverse baud across 

 the ocelli on anterior part of vertex and base of frons. Anterior 

 ridge of frons strongly convex, sinuate in the middle, with two 

 irregular lateral groups of black granulations. Free margin of 

 occipital plate slightly concave, a low and indistinct longitudinal ridge 

 on the plate. Vertex projecting in a low, anteriorly convex ridge over 

 the ocelli. Occiput dull ochreous. Thoracic pattern, Plate IX, fig. '2. 



Legs olivaceous, spines black ; a mere trace of black lines on first 

 and second tibiae ; third tibiae blackish internally. 



Abdomen very slender, segments 1-2 slightly dilated, 3-7 cylindrical, 

 8-10 dilated in lateral and dorso-ventral dimensions ; lateral margin 

 of 8-9 foliate. 



