The Ocloiiata or Dragonjlies of South Africa. 327 



(iii, iv, V, ix .1911, W. E. Jones) ; 3 ^ , Eietfontein (2, 9, 30 . x . 1904) ; 

 1 (J, Salisbury (26 . xii . 1911) ; I ^, 19, MatojOT Dam, Bulawayo 

 (11 .ii.l911) ; Otjituo, S.W. Protectorate (Tucker). Brit. Mus. : 

 1 (^ , 1 ? , Deelfouteiu (Col. Sloggett, 1903) ; 1 J" , Krooustad, Orange 

 Pree State (E. Eckersley, 190-1); 1 S, Boksburg, Johannesburg 

 (C. H. Pead, 1907) ; I ^ , Salisbury, Mashonaland (xi . 190-5, G. A. K. 

 Marshall). Mus. Stoc-kholm : 6 (J , 6 9 , Cap. Bon. Spei (Victoria) ; 

 1 (J, Port Elizabeth (Dubon) ; 1 9 , Caffraria (Wahlberg) ; 2 c? , 1 9 

 Swakop., S. West Protect. (Wahlberg); 2 c^, Salisbury (x, xi . 1903, 

 Marshall). Mus. Hamburg: S ^ , I 9 , Grootfonteiu, South-West 

 Africa (7, 11 .vi.l911, Michaelseu). Mus. Tervuereu ; 1 ^, Kaj)iri, 

 Katanga (x . 1913, Legros). Coll. E. B. Williamson : 4 <;? , 2 9 , Natal 

 (G. F. Leigh). 



This is evidently the most common of the smaller Agrionidae 

 throughout the faunal I'egion here discussed. There is some variation 

 in the relative extent of light blue and black colour, but no serious 

 difficulty was found in separating specimens from the allied species, 

 males especially being readily identified by the shape of the appendages. 

 The following description is taken from specimens from M'Fougosi. 



[J . Occiput very light greenish blue. Laliium whitish or yellowish. 

 Dorsal surface light greenish blue, marked black, also the postclypeus, 

 frons and vertex to base of antennae or slightly more in front; blue 

 postocular sj)ots more variable in size and shape than usually in this 

 genus ; mostly narrow, transverse, slightly cuneiform stripes, united 

 by a line on the occipital border, or much broader, sejiarated only by 

 a narrow black line from the occipital lilue ; or almost circular lateral 

 small spots, which may be exceedingly small, or even disappear almost 

 completely. 



Prothorax blue and black, also variable ; blue at the sides and a 

 narrow anterior border only, or also a douVjle dorsal spot and the 

 border of the posterior lobe. Thorax light blue and black, also 

 considerably variable. Dark specimens : Dorsum black, lilue ante- 

 humeral liand slightly narrower than corresponding half of mid-dorsal 

 black stripe ; humeral black about equally broad, more so behind 

 humeral suture at ventral end, before at dorsal end ; sides ligh 

 greenish blue, very small black dot in dorsal end of second lateral 

 suture ; ventral side turning to whitish. Light six-cimens : Complete 

 blue line on mid-dorsal suture ; ante-humeral lilue stripe broader than 

 median Ijlack stripe of same side, a narrow black line only on humeral 

 suture. Legs greenish, external side of femora broadly, of tibiae 

 narrowly black. 



Abdomen light greenish Ijlue, marked black ; quadrilateral dorsal 



