fhe Odonata or DragoiiJJies of So/ith Africa. 395 



Abyssiuia ; evidently it is not a cominoD species m the South 

 Africau fauna. 



Oethetrum icteeomelas (Eis, 1909). 



S. Afr. Mus. : I ?, Boksburg, Transvaal. Brit. Mus. ; 1 ^.2 9, 

 Boksliurg, Johannesburg (C. H. Pead). Coll. E. B. Williamson: 

 3 (?, 2 9, Salisbury, Mashoualand (ii . 1900, Marshall). 



Similar in general form and size and also the large, liright yellowish 

 pterostigma to 0. guineeniie, Abhofti and chrysosticima. Of this group 

 the pterostigma is generally largest in icteromelai>, smallest in 

 chrtjsosiigma. Females and uon-pruiuose males are easily identified 

 by the abdominal pattern ; pruiuose males, although very closely 

 resembling the above-named three species, especially ijii.ineense, are 



Fia. 69. — Orthetrum ideromelas, ^ . Salisbury. Genitalia, second seg- 

 ment, left side view. 



unmistakable when the peculiar hamuli are in good position for 

 examiuatiou. 



Oethetrum cappeum (Burmeister, 1839). 



S. Afr. Mus. : 3 ? , Burghersdorp, Cape, Worcester ; 1 ^J , 1 $ , 

 M'Fougosi, Zululand (v . 1911, W. E. Jones); 1 cJ , Eietfontein, 

 Pretoria District (2.x. 1904) ; 2 cJ, 3 ?, Eldoret, Brit. E. Africa 

 (viii . 1913, W. E. Fry) ; Acornhoek, Transvaal (xii . 1918, Tucker) ; 

 Grootfoutein aud Otjituo, S.W. Protectorate (i . 1920, Tucker). Brit. 

 Mus. : 1 (J, Mahakata Eiver, Gazalaud (24 . ix . 1905, Marshall) ; 

 1 9. Johannesburg (H. Crawford-Cruger) ; 1 c?, Zululand (Eev. 

 W. H. Heale) ; 1 ^ , Willow Grange, Mooi Eiver, Natal (9 . ii . 1913, 

 E. C. Wroughtou). Coll. E. B. Williamson: 1 (J, 1 2, Salisbury, 

 Mashoualand (iii . 1900, v . 1905, Marshall); 1 ^, Hilton Eoad, 

 Natal (23, xii . 1909, G. F. Leigh). Mus. Stockholm : 1 9, Cap. b. 

 Spei (Wahlberg). 



The thoracic pattern of two lateral and often also an ante-humeral 

 whitish stripe is a conspicuous and regular character of this species. 



