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141 



INDIAN DRAGONFLIES. 



BY 



Major F. C. Fraser, I.M.S. 



(With 12 Text-figures). 



( Continued from pacje Q27 of Volume XXV). 



Part III. 



Gemis — Lyriothemis. 



J'^ 



JS 



Fig. 14. — Male sexual organs of X. acigastra (x 12). 

 „ 15. — Female sexual organs of i. c/m (x 12). 

 „ 16. — Male sexual organs of i. cleis (x 12). 



Lyriothemis, Brauer (1868). 



Calothemis, Selys. 



Head large ; eyes moderately contiguous ; forehead narrow, somewhat 

 rounded, prominent and in the male of one species, with a sharp anterior 

 foreborder ; sutures moderately deep ; vesicle notched. 



Prothorax : posterior lobe small, arched, not projecting. 



Thorax robust. 



Legs robust, armature in the two sexes almost identical, that of the hind 

 femorse, a row of gradually lengthening and moderately small spines ; 

 tibial spines numerous, fine and moderately long. Claw-hooks ordinary. 

 Abdomen short and depressed ; in the male somewhat dilated at the base 

 and then gradually tapering to a point at the anal end ; in the female 

 cylindrical and with the lateral borders nearly parallel. 



Sexual organs of the male : tentaculae large and markedly differentiated, 

 the internal segment indented. Superior anal appendages small. 



Sexual organs of the female : border of 8th abdominal segment much or 

 only slightly dilated according to species ; vulvar scale very small and 

 made up of two opposing valves. 



Wings long and narrow or moderately narrow, hyaline or with but a 

 poorly marked spot at the base ; reticulation close ; trigone of forewing in 



