66 British Draoonflies. 



Immature * Colour. 



In the freshly disclosed male the markings are 

 pale yellow as in the mature female. 



Variation. 



Sometimes the base of the wings is slighth' tinted 

 with saffron, but perhaps onh' in the female. Mr. J. 

 Arkle, in June, 1897, took a specimen on Whitegate 

 Heath, Delamere Forest, in which " all the wings were 

 suffused with smoky saffron, the suffusion being strongest 

 at the wing-bases and weakening gradually towards the 

 margins." De Selys mentions specimens with suffused 

 wings, though apparently not to such an extent as 

 in Mr. Arkle's specimen. (De Selys, " Revue des 

 Odonates," p. 52.) 



Nymph. 



Body of the usual sepia tint, broad and somewhat 

 flattened ; length, including appendages, 20mm., greatest 

 breadth 6"5mm. Head rather small, somewhat tri- 

 angular, width 5'5mm., narrow from front to back. 

 Antenncj; of seven joints, the basal two being short and 

 rather swollen, the rest longer, more slender, and 

 darker. Mask barely extending to the insertion of the 

 mid-legs, narrow at hinge, spoon-shaped, covering the 

 face ; palpi broad where they approach, and there 

 serrated ; middle lobe of mask produced into a blunt 

 point. Eyes as spherical, or rather conical, knobs, 

 inserted rather far back, prominent, the axis oblique to 

 the mid-line of the body. Top of head convex. 



* Also called " Teneral." 



