324 



Annals of the South African Museum. 



from the continental type, and might eventually be described as 

 a distinct subspecies or even species. 



cJ . Different from the above-described specimen by (1) ante- 

 humeral blue stripes very narrow, invaded by the median black stripe, 

 distant about their own breadth from humeral suture ; (2) black 

 dorsal band on segment 8 for about two-thirds the length, black 

 dorsal spot on anterior half of segment 9, dorsal black band of 

 segment 10 broader ; (3) appendages slightly different, the medial 

 prominence of superior being more distinct and a latero-ventral pro- 

 jection visible in side view (Text-fig. 36). M" 3 and ' 



4+3.4 + 3, 



5+3.5 + 2 5 + 3.5 + 3 

 4T3T4+~3, 4+4.4 + 3' 



FIQ. 36.Enallagma nigridorsum, forma b, . Madagascar. Appen- 

 dages, right side and dorsal view. 



$ . Head and thorax as in male ; light colour of head dull 

 ochreous ; postocular spots bluish green ; ante-humeral stripes 

 ochreous ; sides of thorax whitish. Abdomen as in male, but instead 

 blue olivaceous on segments 1-2, ochreous 3-7, bluish green 8-10 ; 

 dorsum of 8 wholly black ; 9 black except a narrow terminal ring ; 

 10 with narrow dorsal transverse black line. Strong vulvar spine. 



5 + 3 5 + 3 

 Pterostigma very light greenish ochreous. M" 2 and M^ JT'O'^TTQ 



in both specimens. Abd. 20, hdw. 14 mm. 



ENALLAGMA ELONGATUM (R. Martin, 1906). 



S. Afr. Mus. : 4 $ .Eldoret, Brit. East Africa (viii . 1913, W. E. Fry). 

 Mus. Stockholm: 1 9 , Kilimandjaro (29 . iii . 1906, Y. Sjostedt). 

 Prom Sjostedt's description it seems most probable that these 



