]66 JOURNAL, BOMBAY NATURAL HIST. SOCLETY. Vol. XXVl. 



Anal appendages black, long, cylindrical and a little sinuous. 



Genital organs : lamina somewhat depressed, its end somewhat tapering, 

 m front coated thinly with long, coarse, black bristles ; tentacul;© small, 

 the internal, a hook, curving on itself and separated from the external by 

 a shallow notch ; the external slightlj'^ overlapping the lobe, depressed and 

 somewhat rounded. Lobe large, rounded. 



Female : rather more robust than the male. 



Head ; eyes olivaceous above, opalescent slaty blue laterally and below ; 

 labrum and labium yellow ; face greenish yellow. 



Prothorax and thorax : a golden brown with a greenish tinge. A broad, 

 brown, diffuse, humeral stripe. Laterally, similar to the male, the con- 

 trast in the colour not being nearly so marked on account of the paler 

 LiTOund colour. 



Abdomen: golden brown or yellowish, the first 8 segments with a marked 

 •ireenish tinge. The mid-dorsal ridge darker and a bordering of diffuse, 

 greenish lunules. Beneath yellowish, lateral spots on each segment. 



Female genital organs as shown ; the border of the 8th segment mark- 

 edly dilated ; stout lateral spines on the border of 9th ventral plate. 



Wings : a bright, golden yellow spot on the basal area of the hindwing 

 extending outwardly as far as the basal spot in the male, but not as far 

 back as the middle of the membrane. 



Legs paler than in the male, femone a golden yellow at the base and 

 on their inner surfaces. 



In females from the Nilgiris the mid-dorsal ridge and the sutures and 

 intersegmental nodes are all finely mapped out in black. There ia a broad 

 sub-dorsal brownish fasciaj extending tbe whole length of the abdomen 

 and covering most of the area of the hinder segments. A greenish yellow 

 stripe on the tergum is continued on to the first .*! segments of the 

 abdomen. 



Hab. Burma, Sikkim, Khasia Hills. Murree, Kashmir •').<>()()', Nilgiris 

 and Ceylon 6,500'. 



24. Orthetrum glaucum, Kirby. Cat. p. 39 (1890). 



Ld. Jour. JAnn. Soc. ZooL '2X, p. o5o (J 893). 

 Karsch, Kruger and Martin. 

 Orthetrum Nicevillei, Kirby, An. May. Nat. Hist. 14, 112 (1894). 



Laidlaw, Proc. ZooL Soc Lond. (1902) 1, p. 68. 

 Libellula fflauca, Brduer (I860), Zool hot. Wien. 15, p. (1012). 

 Libella glaur.a, Braner (1868), ZooL hot. Wien. IS, p. 732. 

 Head ; adult male ; face black, the epistome somewhat paler or a bright 

 brown ; forehead a deep black, it and the vesicle a dull, metallic blue by 

 reflected light. In the juvenile male and the female, the face and fore- 

 head a bright yellow. 



Prothorax, thorax and abdomen of the adult male : entirely frosted with 

 a dark blue. Juvenile males and females olivaceous with broad, diffuse, 

 humeral bands and laterally 2 bright, greenish yellow bands, one anterior 

 and the other covering the front half of the metepimerou. 



Legs black in adult males, brown or yellowish in juvenile males and in 

 females. 



Wings : trigone in the hindwing entire ; arc between the 2nd and 3rd 

 antenodal nervures ; 2 rows of cells between 5 and ^m : 8th nervnre in the 

 hindwing arising from the anal angle of the trigone. 

 Membrane black. 



In the male, a golden brown, basal spot in the hindwing extending as 

 far as the 1st antenodal ne'-vure, somewhat beyond the cubital nervure 

 and about 2 cells beyond the end of the membrane. The reticulation is 

 in this spot in adult forms frosted with blue. The costa narrowly yellow. 



