INVIAK DRAGONFLIES. 
619 
Thorax short but robust, dark chestnut brown marked with green, tbe dorsum 
bearing apple green, antehumeral bands which taper slightly forwards, the sides 
entirely green except for a band of the ground colour at the middle which divides 
the green into a broad, anterior band and a broader, posterior covering the whole 
of the metepimeron. 
Wings slightly and uniformly enfumed, long and rather narrow ; stigma short, 
dark brown, over 3-4 cells in the forewing, only over 2 or IJ in the hind, usually 
unbraced but a sloping nervure meets the stigma a little distal to its inner end, 
the stigma of the hind wing is much smaller than that of the fore ; trigone of fore • 
wing traversed regularly 3 times,that of the hind 3 to 4 times and very irregularly, 
a nervure running from the base may join the first traversing nervure or run 
backwards to the outer side of the trigone, thus enclosing a triangular cell ; mem- 
1 ,11 10-18 19-10 
brane white; nodal index: — . „ . _ 
13-15 17-13 
I’cticulation rather close. 
Legs long and rather slim, the femora reddish brown except at the distal ends 
where they turn dark, tibia* blaok, armature of the legs as for Cephalcesckna. 
Abdomen long and slim, tumid at the base, constricted at the 3rd segment, 
cylindrical thereafter, black marked with green and yellow as follows : — segment 
1 broadly yellowish green at the sides, segment 2 also broadly yellow at the side, 
and the dorsum bearing an apical annule which is contiguous with a short, linear 
stripe on the dorsal oarina, this itripe broken at the centre of the segment and 
here, on either side of the dorsal carina but not quite meeting it are 2 linear, 
transverse, yellow lines ; segment 3 has an apical, narrow annule, 2 triangular, 
small, yellow spots situated nearer the base than apex and slightly separated 
by the dorsal oarina, these spots are limited basally by the transverse ridge of 
the segment and low dowm on the sides at the end of this ridge is another small, 
yellow spot, finally at the base, on the sides is a largish, subtriangular spot ; 
segments 4 to 7 have the apical annule and the tw'O sjwts margining the trans- 
verse ridge ; segments 8 and 9 have only the apical annule, whilst 10 has merely 
a small, lateral, yellow spot. 
Anal appendages as long or nearly as long as the two last abdominal segments, 
slim at the base, broadening after the first third especially inward, traversed by 
a strong midrib, bevelled at the apex where they end in a small point, brown ; 
inferior about two-thirds the length of the superior, curling strongly upwards, 
triangular. 
Female. Length of abdomen 45 to 47 mm., hindwing 41 to 43 mm. 
Very similar to the male in colouring but a much bulkier and stouter insect, 
the abdomen tumid at the base and not constricted at the third segment, rather 
flattened from side to side, the 8th and 9th segments broadened from above down. 
Head. Labium and labrum bright ochreous, the rest of face and frons golden 
browm ; eyes brown ; occiput very small, blaok, with a crest of short black hair.'^. 
Thorax as for the male, the antehumeral bands are of almost the same width 
throughout but are rapidly pointed at the anterior end. 
Legs as for the male but the spines on the femora are more scanty. 
Wings long and broader than those of the male, hyaline, the bases saffronated, 
this paling as far as the arc which is acutely bent ; stigma only slightly smaller 
in the hindwing, the difference in size not nearly as marked as in the male, over 
2 cells in all wings, braced but the brace not running from the extreme, proximal 
end of the stigma, dark brown ; trigones with 4 cells in all wings ; 7 eells in the 
loop ; Rs forked a long way from the stigma, 2 rows of cells between the branches 
of the fork ; nodal index : — Karsoh’s specimen ; Laidlaw’s 
* 12-15 16-13 
9-19 19-12 „ 12-20 20-lc , , , 
l^Fs T(LT3 ’ 15145 ~I(n4' combmed 
number of ante and postnodal nervures in the forewings of the first two speci- 
T 
