Tie Odonata or Dragonflles of South Africa. 



9. Very similar to male in colour, the following bring different: 

 dark lines at median thoracic suture not blackish, only reddish brown 

 with a small blackish nucleus. Blackish mid-dorsal band of segments 

 1-7 slightly narrower, narrowly extended on anterior half of 8; no 

 bluish shade on terminal segments. Vulvar spine strong; valvae 

 slightly projecting beyond abdominal end. M.-, and M,o in male. 



<J, Aid. 25, Julw. 15 mm. 9 , 24, 16 to 26-5. 



FIG. 41. Enallagma subtile, $ . Kapiri. Appendages, right side and 



dorsal view. 



ISCHNURA (Charpentier, 1840). 



A cosmopolitan genus, somewhat peculiar in the geographical 

 distribution of its species. Some species range over an exceedingly 

 wide area, but there is generally only a very small number of species 

 in one geographical region mostly one or two ; certain other species 

 have a rather narrowly limited distribution, inhabiting chiefly dry 

 regions (Western North America, Mediterranean, Europe and North 

 Africa, Central Asia). The European /. elegans is one of the most 

 common Odonata of that continent, and remarkable for not being at 

 all particular to the quality of water it inhabits, resisting evidently 

 a considerable amount of pollution. Similar resistance may account 

 for the wide distribution of other species. 



ISCHNURA SENEGALENSIS (Rambur, 1842). 



S. Afr. Mus. : 1 9, King Williamstown, Cape Colony; 1 <^, 

 Dunbrody, Blue Cliff (ii . 1912) ; 1 $ , 1 ? , Newcastle, Natal (1893, 

 A. E. Hunt) ; 3 , Loreuco Marques (18, 22 . xi . 1911) ; Otjituo, S.W. 

 Protectorate (i . 1920, Tucker). Brit. Mus.: 4 J,4 $, Deelfontein 

 (6.1.1903, Col. Sloggett). Mus. Stockholm: 2 J, 3 9, Caffraria 



