128 British Dragoiiflics. 



grey. Abdomen rather long", flattened behind the third 

 segment, powdered with bhie except segments i, 2, 

 8, 9, lo, \\hich are bhick, and the 7th, which is 

 partly so ; there is a fine mid-dorsal black line as well 

 as . a pair of dorsal, transverse, tin_\' black streaks near 

 the posterior edge of the blue segments. Upper 

 anal appendages c\'lindrical, about 2'5mm. long, black ; 

 loNver one shorter, triangular, dark, turned up at tip. 



Female Imago. 



Face yellow. Thorax yellow, dorsal prominences and 

 markings edged \\'ith black Abdomen yellow, each 

 segment edged with black, two broad dorsal black lines 

 extending along its whole length. Anal appendages 

 short, black. Pterostigma narrow, 3mm. long, black. 

 Vulvar seale not prominent, with a deep rounded notch. 

 Borders of ninth segment winged below. 



Immature Colouring. 



Till the blue powdering appears, the male is exactly 

 like the female in colour. 



Variation. 



This species does not seem to be subject to much 



variation. Bath mentions that the lateral black line of 



the female is occasionally very broad. 



Nymph. 



In Science Gossip, Jul)', 1894, Mr. W. H. Nunney 

 gives a figure of the nymph, and sa\s that : " An old 

 writer, Muralclt, published in a now rare Latin work, 

 entitled ' Ephemeris Natura.^ Curiosorum,' a loose 



