52 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVU. 



the 3rd ; loop very long and very narrow, its inner border with an angle very 

 similar to that seen in Pantcila flavescens, from which a tolerably distinct 

 supplementary sector runs back to split up the anal area into an inner area 

 of narrow, elongated cells arranged in oblique rows and an outer, of 

 rounder, hexagonal cells. Divided cells in all angles of the loop ; body 

 of loop narrow and strongly constricted, the toe much elongated. Stigma 

 small, that of the hindwing much smaller than that of the fore. Membrane 

 moderately large. 



Abdomen long and narrow, cylindrical, the base tumid, the 3rd and 4th 

 segments markedly constricted, the remainder fusiform in the male, 

 cylindrical in the female. 



Anal appendages very long and slender in both sexes. 



Sexaal organs : male : lamina broad and dexaressed, the border curling 

 outward a little ; internal tentaculse very robust, long, almost straight 

 hooks, somewhat carrot-shaped ; external tentaculse obsolete ; lobe quad- 

 rate, strongly arched posterior border. 



Female : border of 8th segment not dilated ; 8th ventral plate prolonged 

 into a split, vulvar scale ; 9th ventral prolonged into a tongue-like process 

 overhanging the 10th and furnished at its middle with two small, horn-like 

 processes similar to those seen in Pantala. 



Key to Species. 



A. Basal marking of hindwing a golden yellow 



enclosing a dark reddish brown, smaller 

 mark 



B. Basal marking of hindwing a blackish brown 



without any surrounding zone of yellow . . 

 67. Tramea basilaris burmeisteri, Kirby. 

 LibeUula chinensis, Burm. 

 Libellula basilaris, Hagen. 



v^ 



T. basilaris burmeisteri 



T. limbata. 



Fig. 5b, Sexual organs of Tramea basilaris burmeisteri. 



a. Female organs, b, Male organs, (x 12). 



