TJtc Odonata or Dragonfties of South Africa. 431 



metepisternum almost entirely ochreous ; latero-ventral and indistinct 

 dorsal spot on metepimeron. Very slight whitish prxiinosity on entire 

 thorax. Legs black. Abdomen black, with ochreous markings ; latero- 

 ventral spot on segment 2, this segment dull olivaceous or ferruginous 

 dorsally ; narrow ring at transverse carinae of 3 ; 4-7 triangular spots 

 at middle of lateral carina corresponding to transverse ochreous bands 

 on ventral surface ; such band also on segment 8 and a vestige on 9 ; 

 narrow light yellow line on mid-dorsal carina of segments 4 to 10. 

 Genital lobe broadly trapezoid. Wings hyaline, faintly greyish yellow 

 from triangular region distally. Dark brown spot at base of second 

 pair; vestige in sc, half way to Cuq in en, 1-2 cells at membranule. 

 Pterostigma brownish black ; membranule black. Female very similar 

 to male. 12-13 Anq. $ , Aid. 32, Mw. 39, pt. > 4 mm. 9 , 35, 38, 5. 



0. Fuellelorni, 



OLPOGASTRA LUGUBRIS (Karsch, 1895). 



S. Afr. Mus. : 1 , Ovampoland. 



Known by a small number of specimens from tropical Africa, East 

 and West, reaching to Nubia. A most elegant and conspicuous 

 insect. 



OLPOGASTRA FTJELLEBORNI (Griinberg, 1902). 



S. Afr. Mus. : 2 J , M'Fongosi, Zululaml (ii, iii .1911, W. E. Jones) ; 

 White River, Transvaal (Cooke) ; Kaapniuiden, Transvaal (xi.!9J8, 

 Tucker). 



The type male from Nubia, female from Nyasaland and the 

 specimens here recorded are all that is at pi'esent known of this 

 species. A few specimens from the Belgian Congo belong to a 

 subspecies differing in the larger size, more robust stature and 

 some details in colour and pattern. 



PANTALA (Hagen, 1861). 



This and the two following genera have in common a particular 

 structure of hind wings with exceptionally broad and also thin and 

 flexible anal field. Corresponding to this structure we find in them 

 a faculty of planing or sailing flight, which faculty is probably 

 responsible for the excessively wide distribution of some members 

 of this group. Pantala includes two species only, one cosmopolitan, 

 the other one American. 



PANTALA FLAVESCENS (Fabricius, 1798). 



S. Afr. Mus. : 1 $ , Gwaai, S. Rhodesia (15 . ii . 1912) ; 1^,1 9 , 

 Salisbury (17 . xii . 1911) ; 1 ^ , Pietersburg, Zoutpaiisberg District, 



