328 



Annals of the South African Museum. 



black spot on segment 1 ; 2 complete dorsal band, slightly enlarged 

 before posterior end, then narrowed and joined to a very narrow 

 terminal black ring ; 3-6 a terminal almost circular spot narrowed to 

 a dorsal stripe which joins the anterior end in a point ; 7 black, sides 

 very narrowly blue ; 8-9 blue ; 10 narrow mid-dorsal black stripe. 

 Appendages (Text-tig. 38), superior black externally, blue internally ; 

 inferior variable from light blue to almost black. The relative 

 extent of black and blue colours on abdomen varies in correlation to 

 thorax and head, but remains the same in principle. 



Pterostigma black, very narrowly bordered with whitish. 

 $ . Yellowish ochreous to light olivaceous and black. Markings on 

 head and thorax much as in the lighter forms of male ; postclypeus 



FIG. 38. Enallagma glaucum, . M'Foiigosi. Appendages, right side 



and dorsal view. 



rather broadly bordered with ochreous ; postocular spots as where 

 they are largest in male. Black lines of legs much reduced, partly 

 incomplete and paler. Abdomen segments 1 and 2 as iu male ; 3-7 

 as in dark forms of male, but dorsal black band not pointed anteriorly, 

 only partially interrupted by a very narrow basal ring ; black dorsal 

 band also over segments 7-9 and basal half of 10, or only a small 

 basal triangular black spot on 10. Vulvar spine long, vulva to end 

 of abdomen. 



Pterostigma conspicuously larger than in male, light ochreous. 



cJ, Abel. 20, hdw. 13-5 to 24'5, pt. 17 mm. ? , 23, 16-5 to 25, 1-8. 



A* proximal to Cuq by considerably more than the length of that 



5 + 3 



vein. Position of M* and M } a mostlv 



4 + 3' 



E. obliteration, which is represented by the single type described by 



