334 



Annals of the South African Museum. 



(Wahlberg) ; 1 <J , 1 $, Mashonaland (Marshall). Coll. Ris : 1 , 

 Lorei^o Marques, " bord de la mer " (1914, H. Junod). Mus. 

 Hamburg: 2 $ , 1 ?, Lorei^o Marques (17 . ix . 1911, Michaelsen) ; 

 1 ?,Beira (22 . ix . 1911, id). 



$ . Occiput and labium whitish. Labrum, anteclypeus, genae, 

 frons not quite to base of antennae green. Postclypeus brilliant 

 metallic blue. Dorsal surface of head otherwise bronzy black ; small, 

 circular bright blue postocular spots. Prothorax bronzy black, sides 

 and a narrow anterior border bluish ; hind lobe small, shallowly 

 divided in three rounded lobes, the lateral ones very narrow, the 

 median one slightly broader and semi-erect. Thoracic dorsum bronzy 

 black ; narrow regular ante-humeral lines bluish, ventral side yellowish 



FIG. 42. Isclmura senegalensis, . Blue Cliff. Appendages, right 

 side and postero-ventral view. 



white. Legs yellowish, external side of femora broadly, of tibiae 

 narrowly black. 



Abdomen moderately stout. Segment 1 blue with a mid-dorsal 

 black band ; 2 blue on sides, brilliant metallic blue on dorsum ; 5-7 

 yellowish on sides, bronzy black on dorsum, the yellow colour ascending 

 in very narrow basal rings ; 8 blue ; 9-10 blue on sides with black 

 mid-dorsal band. Appendages (Text-fig. 42). 



Pterostigma narrow, slightly elongate, rhomboid, of equal form in 

 both wings ; black in proximal, whitish in distal half in front wing, 

 light greyish ochreous in hind wing. 



9 . o. (Andromorphous or homoeochromatic form.) Almost entirely 

 similar to male in colour, the only appreciable differences being dorsum 

 of segment 2 bronzy black with only an indication of metallic blue, 

 sides of segments 3-7 rather olivaceous than yellowish. Pterostigma 

 concolorous, greyish ochreous in both wings. 



