744 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVI. 



Head comparatively small; eyes bottle green; occiput black edged 

 behind with canary yellow, entirely yellow at the back ; vesicle conical, 

 with 2 points which are tipped with brown, metallic green with a bright 

 yellow summit ; frons and forehead above metallic green ; epistome and 

 labrum a dirty yellow, the former with 2 diffuse brown spots about its 

 middle ; labium a dirty yellow with diffuse brown borders. 



Prothorax black with a yellow collar anteriorly and the free border of 

 the posterior lobe yellow, this latter border furnished with a ruff of long, 

 pale coloured hairs which interlace with similar hairs on the back of the 

 head and antero-dorsal surface of the thorax. 



Thorax black, deep blue metallic lustre marked with bright yellow as 

 follows : — the mid-dorsal carina and interalar sinus yellow, a post-humeral, 

 incomplete fascia consisting of 2 spots just joined by a narrow isthmus, 2 

 moderately broad fascise on the sides, the posterior one crossing the 

 metepimeron and finally a row of yellow spots on the tergum. 



Legs black, armature as described for the genus, no claw-hooks. Anterior 

 femora marked with yellow on the outer surface. 



Wings hyaline, the apices tipped with a faint smoky brown. Mem- 

 brane black. Stigma blackish brown. Subtrigones with 4 cells ; antenodal 

 nervures 15^. 



Abdomen black marked with bright yellow as follows : — A triangular spot 

 on the dorsum of the 2nd segment, the intersegmental node between the 

 2nd and 3rd and the transverse ridge on the 3rd segment finely yellow, a 

 series of dorsal, geminate spots on the 2nd to 9th segments, gradually 

 enlarging as traced analwards and gradually approaching the proximal 

 ends of the segments, oval yellow spots on the borders of the 2nd to 6th 

 segments, very large on the sides of the 3rd and decreasing rapidly in size 

 as traced analwards, the 10th segment black. Anal appendages black. 

 Beneath the abdomen, the yellow bordering spots on the upper side are 

 found to extend inwards as far as the pleural membrane. 



Sexual organs : male : lamina a broad, somewhat depressed arch, 

 notched at the border ; tentacuke ; the internal a long, slender, strongly 

 curved hook, the external broad and foliate ; lobe rather small, projecting 

 and bearing a stout, blunt spine at the apex. 



Female : border of 8th segment not dilated ; no distinct vulvar scale, 

 the 8th ventral plate minutely bilobed ; the 9th ventral plate overlapping 

 the 10th and bearing near its middle, 2 small, stout, spinous processes. 



Hab. Ceylon, Nilgiris, Kalar 2, -500 ft. The insect is very local and 

 very scarce. I have seen five specimens only of which I captured one and 

 that only after stalking it for two hours vip to my middle in a swift 

 mountain stream where the boulder strewn bottom made progress both 

 arduous and dangerous. It is quite the most wary dragonlly I have ever 

 attempted to take, and its wariness is only equalled by its restlessness. 

 The species is found haunting deep ravines at the foot-hills, in dense jungle 

 and always settling, after short flights, over deep water. 



(7b he continued.) 



