XVIII] 



BRITISH SPECIES 



343 



12. C. aeneaLirm. JabdSS 36, hw 32 34,^3-2. Wings well-saffroned 

 at bases. Colour metallic bronze-green ; thorax covered with brownish down ; 

 notum reddish brown. Abd. strongly clubbed; without markings. App. sup. 

 2-8, blunt, divergent; inf. 1-8, very strongly bifurcated. ? similar to (J, but 

 abd. broader, not clubbed ; apps. 2-5, leaf -like. Rare; Southern. May July. 



Genus VIII. Somatochlora Selys (fig. 173). Venation as in VII, but hw 

 with a weak st, and t either crossed or free. App. inf. of $ simple. 



Fig. 173. Wings of Somatochlora arctica Zett., $ (Hw 31 mm.). Original. 



13. S. metallica Vanderlinden. <J abd 3338, hw 3337, pt 22-5. 

 A touch of saffroning at extreme bases of wings. Colour metallic bronze-green. 

 Abd. much constricted at 3, 1 3 with small 



yellow spots. Apps. as in fig. 174 A. $ abd 

 3741, hw 3638, pt 2-53. Similar to (J, 

 but with broad unconstricted abd. ; apps. 4, 

 slender, lanceolate. Very rare. July Aug. 



14. 8. arctica Zetterstedt. $ abd 34 35, 

 hw 31 32, pt 2-5. Wings slightly saffroned at 

 bases, and partly suffused with yellow near 



middle. Coloration bronze, coppery, or even Fig- 174. Anal appendages 



steel black; sides of thorax metallic green. f m f les ? of SormtocUora 



dorsal view. A. 0. mdal- 

 Abd. much constricted at 3; 1 3 with small 



yellow spots. Apps. as in fig. 174 B. $ abd 



33 35, hw 3032, pt 2-5. Similar to $, but 



wings yellower ; abd. less constricted, wider, almost black ; apps. 3, slightly 



lanceolate. Rare; Northern. June July. 



Subfamily Libellulinae (Characters, p. 269). 

 Tribe Libellulini (Characters, p. 269). 



Genus IX. Libellula Linn. (fig. 131). Fw with about 12 Ax, the last 

 complete. Sectors of arc. arising just separated; t crossed in both wings. 



lica Vand. B. S. arctica 

 Zett. Original. 



