INDIAN DRAdONFLIES. tJi)3 



Af/rionoptera, Braner, 



Lihellula, liambiir. 



Head medium sized ; cj-es broadly contiguous ; front in the male promi- 

 nent with a distinct foreborder and sharjily pointed anj^les, in the female, 

 rounded and less pr(miinent, the angles and foreborder only indistinctly 

 seen. Vesicle deeply notched. 



Lobe of prothorax very small, flatly convex, not projecting. 



Thorax robust. Legs long ; male; hind femone with numerous small 

 spines with a few longer ones at the distal end ; tibial spines, fine, short 

 and numerous ; legs of the female short; the hind femone only differing 

 by the spines being less numerous. 



Wings : reticulation very close ; antenodal nervures l;j-l(> ; ] cubital 

 nervure in the fore-wing, 1-3 in the hind ; 4th nervure with a slight costal 

 convexity ; 1 row of cells between o-.5a ; trigone in fore-wing traversed, in 

 the hind entire ; supplementary nervures to bridge variable : discoidal 

 Held beginning with 3 rows of cells, then live sets of two : 7a distinct in the 

 hind-wing, variable in the fore ; loop well formed, without bisected cells. 

 Stigma moderately large, :^'o-3 mm. 



Abdomen slim, somewhat fusiform in the male, cylindrical in the female. 



Genitals, male : secondary sexual organs small, procumbent, coated with 

 many yellowish bristles ; tentaculre small, semi-arched, narrow, with small 

 hooks. Lobe broadly rounded and somewhat dilated at the end. Female ; 

 lateral borders of 8th abdominal segment broadly and foliately dilated ; at 

 the end of the 8th ventral plate a very small vulvar scale in the form of two 

 rounded, glossy, leaf-like organs which approximate to each other ; 9th 

 ventral plate raised into a stunted, yellowish carination bearing a long 

 bristle at its end and barely projecting beyond the 10th abdominal 

 segment. 



4. Agrionoptera insignis, Ris. 



Agrionoptera (juatornata, Brauer. 



A. insignis, Brauer. Lihellula insignis, Rambur. 



Agrionoptera nicobarica, Brauer. 



Agrionoptera siinilis, Selys. 



Agrionoptera j^apuensis, Selys. 



Agrionoptera insidaris, Kirby. 



Agrionoptera variabilis, Kruger. 



Expanse, male o4 mm. Length, male 36 mm. 



female 08 mm. female 36 mm. 



Small species. 



Thorax : dorsum a dark bronze green with two fine yellow stripes in the 

 middle line ; a humeral, linear spot below and a more prominent band 

 above it ; the sides bright yellow with bronze green markings or the ground 

 colour a bright brown tint with three dark bands traversing it, the first, 

 undivided, passes directly behind the humeral region, the second, often 

 forked, crosses over the lateral thoracic spiracle, the third also forked, 

 somewhat ventral to the middle of the thorax, the hind branch of the fork 

 passing to the anal border of posterior part of thorax. All these markings 

 are extremely variable and often broken up and anastomosing with each 

 other so that most specimens show an irregular collection of spots. In the 

 female, the markings are similar but darker and more defined. 



Abdomen, male: segments 3-7 scarlet red, the lateral. borders and the 

 distal end of segment •"> narrowly black, segments 8-10 and the anal 

 appendages black. Female brown instead of red, otherwise similar. 



Genitals of female : dilatation of 8th segment uniformly present ; 9th 

 ventral plate specific in character, the basal part somewhat grooved, the 



