INDIAN DRAGONFLIES. 491 
Superior anal appendages black, seen from above they are spatulate and very 
broad, seen in profile they are strongly curved especially at the ends. At the 
base and beneath there is a robust tubercle and on the upper surface of the apex, 
a small tubercle. The apical two thirds is thickly coated with long hairs on its 
upper surface. The superior appendages equal in length to the last two abdominal 
segments, the inferior rather more than half the length of the superior, 
curving up strongly to meet the superior, its end furnished with a small, recurved 
hook. 
Female. 
Very similar to the male but much more robust, the wings broader, the abdo- 
men stouter and shorter relatively. The thorax reddish brown with the same 
markings as for the male, the abdomen a rich ochreous or reddish orange. The 
Ist segment on the dorsum and the base of the 2nd marked with green, all other 
segments unmarked. The 8th, 9th and 10th segments are mostly black, the 
ground colour exhibited only as spots of reddish. 
Legs back, red at the base. 
Anal appendages small, leaf-like pointed at the apex, black, a little longer 
than the 10th segment and separated by a hairy protuberance. 
The dentigerous plate prolonged into an acute arch through which the ovipositor 
passes. Its free border below furnished with about 10 robust spines, its surface 
free of spines. 
Aschna petalura, Martin, Cat. Coll. Selys, Aeschnines, pp. 78-79, 1909. 
Laid. Rec. Ind. Mus., Vol. xxii., p. 89, 1921. 
Male. Abdomen 63 mm. Hindwing 53 mm. 
-Head. Face and frons yellow, the latter with a badly defined, black T-shaped 
mark above on a brownish background ; eyes large, broadly contiguous ; occiput 
small black. 
Thorax blackisk, marked with a yellow, antehumeral line on each side of the 
dorsum and two very broad, yellow bands on each side. Legs black. 
Wings hyaline ; stigma black, very smail ; trigone with 6 cells ; hypertrigones 
traversed 5 times; forewing with 25 antenodal nervures and 15 postnodals ; 
membrane yellowish white ; anal triangle with 3 cells ; Rs (5th or nodal sector) 
bifurcating at the level of the inner end of stigma. 
Abdomen cylindrical, slender, slightly tumid at the base and slightly con- 
stricted at the 3rd segment. Dark brown marked with pale spots but slightly 
apparent. The sides of the 2nd segment pale yellow and apical rings on segments 
3 to 6. The 10th segment with a slightly elevated tubercle on the dorsum. 
Anal superior appendages black, very hairy, petiolated in the basal fourth, then 
broadening into a spatulate foliation, rounded at the apex. Inferior rather 
more than half the length of the superior. 
Female. Very similar to the male. Occipital triangle yeliow. 
Thorax dark brown marked with a green antehumeral line on each side of the 
dorsum and two broad yellow stripes on the sides. 
Abdomen much stouter than that of the male, tumid at the base and cylin- 
drical thereafter to the anal end, dark brown on the dorsum, paler low down on 
the sides. Marked with pale brown or yellow spots as follows :—Ist segment 
yellow on the dorsum, 2nd segment with a basal, dorsal triangle, 2 transverse 
stripes about the centre of the dorsum separated by the dorsal crest and finally 
an apical ring of yellow broken by the dorsal crest, segments 3 to 7 with the 
same dorsal stripes in the middle of the segment and the apical ring, segments 
4 to 7 have additional dorsal points of yellow, 8 has only the apical annule which 
is broadly broken by the dorsal crest, 9 has some yellow on the lower part of 
the sides and 10 is unmarked. 
Anal appendages similar to the male but larger and broader. 
Wings saliated; stigma brown, very small ; trigone of forewing with 5 cells, 4 
