The Odonata or Dracjonflies of South Africa. 435 



lined with black ; broad black dorsal spots on segments 8-10. Female : 

 Face dull oclireous ; frons orange, superiorly about basal half black with 

 metallic lilue reflection. Thorax and abdomen lighter in coloiu- than in 

 male, g , Ahd. 32, hdw. 40, pt. 2 5 < 2 mm. ? , 30, il, 25, 2 T. limbata. 



Tramea basilaris (PalisoL de Beauvais, 1805). 



S. Afr. Mils.: 1,^, Loreuco Marques (J. da Costa); Grootfoiiteiu, 

 Tsuiueli, Saudup, Oudougua, S.W. Protectorate (i . 1920, Tucker, 

 and ii . 1921, Barnard). Coll. E. B. Williamson: 1 (^ 2 in cop., 

 3 tJ, Salisbury, Maslioualaud (xi . 1900, Marshall). Coll. Sclys : 

 2 (J , 3 9 , " Afrique australe." 



Known from intertropical Africa, East and West, and from some 

 islands of tlie Indian Ocean in a form of little variability. A slightly 

 different form from India and Ceylon. 



Tramea i.imbata (Desjardius, 1832). 



Coll. S.'lys ; 3 c? , Belagoa Bay. Coll. K. J. Morton :1c?. Natal. 



T. liinhata, in the wide application given to this name by the writer, 

 means a species highly polymorphic in colour of wing base and of 

 frons, but structurally homogeneous, ranging between Senegal in W. 

 Africa and the islands of Samoa in the Pacific Ocean throughout the 

 inter-tropical region. Forms from continental Africa were named 

 T. contineiitnlig by de Sclys, those from Delagoa Bay and Natal T. 

 limbata a^ l>y the writer. 



UKOTHEMIS (Brauer, 1868). 



A genus of tropical .African and Asiatic distribution, including a 

 small number of forms. Similar in outline and facies to Crocothemis, 

 but there is no real affinity to that genus ; neural details and the 

 genital structure of both sexes demonstrate close relations to the 

 Tramea group. 



(J. Thorax and abdomen wholly black, with dark greyish-blue prui. 

 uosity, not covering on abdomen a broad mid-dorsal black line, which is 

 widened at terminal joint of each segment. Labium ochreous with 

 indistinct median fuscous band ; labrum black ; anteclypeus light oli- 

 vaceous; postclypeus and frons black, narrowly light yellow at sides. 

 Wings hyaline, very lightly stained with yellowish, narrowly and diffusely 

 brownish at tips. Base of hind wings with a deep blackish-brown spot of 

 variable size, in most specimens in c and sc half way to -dni;,, vestige in 

 m, in cu to Cuq or sliglitly beyond, to somewhat more than half way 

 l^etween apex of membrauule and anal angle ; limits of spot indented 



