A SYNOPSIS OF THE BRITISH DRAGOX-FLIES. 53 



inconspicuous basal tubercle beneatb ; the lower broad, 

 triangular. ^E. borealis is easily recognized because 

 it is the only one of which the subnodal sector is simple, 

 and not bifurcate at the end; the subnodal sector is 

 the fifth longitudinal nervure from the costa, counting 

 that as one, in the end of the wing. 



25. M. juncea, L. ; Stepli.; Revue, p. 116. Charp.pl. 20. 



(JE, picta.) 



Length 32 lin. ; exp. 46 lin. 



Habitat England, Scotland, Ireland. 



Brown ; thorax with two straight yellowish stripes in 

 front, interrupted in the female, and two oblique 

 yellowish bands at the sides; abdomen slender, cy- 

 lindrical, coarctate behind the base in the male, spotted 

 with blue ( $ ) or yellowish-white ( ? ) ; accessory 

 membrane cinereous, paler at the base ; pterostigma 

 very large ; anal appendages of the male long, leaf- 

 like, their end pointed, without a basal tubercle ; the 

 lower triangular, lono;. 



26. M. cyanea, Miiller; (maculaiissima auctorum) ; Revue, 



p. 115. Charp., pi. 23. 



Length 32 lin. ; exp. 46 lin. 



Habitat England, Scotland, generally. 



Brown ; thorax with tiro large oval green spots in front, 

 and two black lines on the sides ; abdomen slender, 

 cylindrical, coarctate behind the base in the male, 

 spotted with blue ( $ ) or yellow ( $ ) ; accessory mem- 

 brane short, whitish ; pterostigma short, almost square ; 

 anal appendages of the male long, leaf-like, the 

 end turned inwards; the lower short, obtuse, tri- 

 angular. 



