1920.] 



F. F, Laidi,aw : Indian Dragonflies. 



147 



Bands trilobed, about one-third width of 

 mesepisternite. Head with black markings. 

 Pterostigma about two and a half times as 

 long as broad, black in adult ... 



[In the last two species the colouring of the adult 



is largely black. L. decipiens, Kirby, a form 



I have not seen, appears to me to be a local race 



of L. pvaemorsa]. 



iii . Synthorax almost entirely bronze-green above. 



Pterostigma transversely bicoloured, basal 



half brown, distal half whitish. Palaearc- 



tic species from Kashmir 



Dorsum of synthorax with dorsal and humeral 

 bands of yellowish colour. Pterostigma 

 yellow. Very large species. Hinder-wing 

 ^•38 mm. 



** Pterostigma not tivice as long as broad. 



Colourmg grayish-white, marked with black, or 

 dark cinnamon brown 



Lestes praemorsa, 

 Selys. 



Lestes barbara 

 (Fabr.) 



Lestes orientalis, 

 Hagen. 



Lestes sp. (^ 

 {^f=.Platylestes platysiyla 

 Ms aiigled { " sous-nodal anguleux " ). (Ramb.) ) 



" Pterostigma scarcely two and a half times as long 

 as it IS broad y 



Colouring grayish yellow, almost without 

 markings, segments 8-9 of abdomen black. 

 ? Annal appendages ovoid, very depressed, 



as long as the last segment. Platylestes platystyla 



(Ramb.) 

 B. Quadrangle of hinder-wing distinctly longer than 

 that ot fore-wing ; its inner side not more than 

 one-third the length of its upper side ; its lower 

 outer angle /ery acute. 

 a. Spines of legs relatively short, those of the pos- 

 terior tibia scarcely as long as tarsal claws of 

 the same legs. 

 Colouring blue and bronze-black. 

 Ratio of greatest breadth of wing to length i : 6. 



Spines of tibiae relatively long, those of the pos- 

 terior pair longer than tarsal claws of same leg. 



Colouring blue and bronze-black. 



Ratio of greatest breadth of wing to length 

 about 1:5; upper surface of head black 

 (noiratre) 



Upper surface of head bronze. 



* Colouring brown marked with green-bronze or 

 bronze-black, 

 f Posterior prothoracic margin simple. 



Pterostigma not inflated, its outer margin 

 not oblique, only twice as long as broad ; 

 uncoloured 



Pterostigma scarcely inflated, its outer mar- 

 gin not oblique, three times as long as 

 broad 

 ff Posterior prothoracic margin trilobed. 



Pterostigma a little inflated, its outer mar- 

 gin oblique. Ac. nearly at level of Ax\... 



Lestes cyanea, 

 Selys. 



Lestes gracilis, 



Selys. 

 Lestes divisa, 



Selys. 



Lestes ? bilineata, 

 Selys. 



Lestes sp. $ . 



Lestes (Sympyena) 

 paedisca 

 (Eversm.) 



