igiQ-J F. F. Laidlavv : Indian Dragonfiies. 185 



from a brownish-white zone. This again, is separated by a dark 

 belt from a gray-brown equatorial zone, the lower part of the 

 Qye being brownish-white deepening in hue towards the ventral 

 pole. 



Protliorax. — Dorsal surface rich brown-black, margined in 

 front and at the sides with gray-brown ; under surface brownish- 

 white. 



Thorax. — Dorsally brown-black with broad gra}" antehumeral 

 bands, sides gray, with a small black mark at the top of the 

 second lateral suture. The mid-dorsal carina is also lined with 

 gray-brown, ventral surfaces grayish-white. 



Abdomen. — Segments 1-2 gray above, brownish-white below. 

 The second segment has a very fine longitudinal line mid-dorsally, 

 which is black ; on the apical half of the segment the line widens 

 suddenly to form a small, rather pentagonal mark of the same 

 colour, which does not touch the apex of the segment. The 



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ciL^. I. — Aciiigrioii olvnipicttni, sp. nov. 



black line and mark are outlined by a very fine margin oi: whitish- 

 brown colour. Segments 3-7 are brownish- white below, marked 

 above with a broad, brownish-black band longitudinally. This 

 band widens considerably at the apical end of each segment 

 so as to form a dark ring round the apex of the segment, just 

 incomplete mid-ventrally. The extreme base of each of the seg- 

 ments is surrounded by a very narrow white ring. Segments 

 8-10 blue-gre}' above, pale beneath. The apex of segment 10 

 dorsally is deeply emarginate. 



Legs. — Pale brown, the posterior surfaces of the femora and 

 anterior pair of tibiae black, as are also basal and apical marks on 

 the posterior tibiae, the tarsal segment and the cilia. 



Anal appendages. — Gray-brown tipped with black. Seen in 

 profile the upper part is about two-thirds the length of the 

 tenth segment, nearly square, the distal side emarginate. Lower 

 pair shorter, conical, tapering rapidly, and directed upwards at 

 the apex. 



