701 
NOTES ON NEW AND RARE INDIAN DRAGONFLIES. 
The reticulation in the apices of both right wings is aberrant and the right hind 
stigma is double the length of any of the others. The basal saffronation is deeper 
and more extensive ; in the right hindwing there is an aberrant cubital nervure 
7-12—12-7 
situated close up to the trigone in the angle ; nodal index ; neura- 
&-9— 11-5 
tion otherwise as in the male. 
Head similar to that of the male, but the labrum broadly bordered with black 
and the metallic of upper frons encroaching on the epistome. 
Prothorax yellow with a black band in front ; posterior lobe small and 
depressed. 
Thorax golden yellow changing to golden brown on the dorsum where there 
is a diffuse, humeral fascia only visible below ; a small, black streak on the upper 
part of the postero-lateral suture. 
Legs rather long, slim and blackish brown in colour. 
Abdomen blackish brown, segments 2, 3 and 4 having broad, light golden 
yellow, basal, annules, occupying l-4th, l-3rd and l-7th respectively of the basal 
end of the segments, segments 5 to 7 with a small, basal, subdorsal spot of golden 
yellow, the rest immaculate. 
Genital valves very similar to those of A. curvistyl , but the vulvar scale cor- 
rugated transversely. 
The male is easily distinguished from other forms by its uniform black colour, 
except A. vacillans which in the adult stage is also matt black with abdominal 
segments 2 and 3 pruinosed white. (Mr. O’Donel informs me that this white 
mark is very conspicuous and it evidently serves the purpose of a distinguishing 
sexual mark.) From vacillans, nigricolor may be distinguished by the abdomen 
and hindwing being of the same length in both the sexes and also by its smaller 
size. 
They apparently rest high as Mr. O’Donel informs me that he took the present 
pair by a swish of his topee whilst riding on the back of an elephant. 
1. Semi-lateral^ view of Macromia cingulata. 
2. Do. do. of Macromia jiavocoloraia. 
