248 



British Dragonflies. 



\ 



Fig. 43. — Mask of Ervthromma xaias. 



(Much magnified.) 



^~- 



•''v^-v. 



•■•'••C^gi 



P'iG. 44. — Legs ok Nvmph ok Ervthrumm \ .\aias. 



(x 15 diameters.) 



