274 ADDITIONS TO THE DRAGONFLY FAUNA OF BORNEO. 
found in the Malay Peninsula, Sumatra and Borneo 
together. 
I have not had an opportunity of discussing the matter 
with M. Martin, but I am inclined to think that his 
Micromerus robropictus is synonymous (see Martin, Bull, 
Mus. d’Hist. Nat. 1902, no. 7, p. 508). 
Agrionike. 
8. Geriagrion bellona, sp. n. 
Two males, Mt. Matang, Sarawak, December, 1918; one 
male, Kina Balu (imperfect), September, 1918. 
A* separating before the level of the cubito-anal cross-vein. 
Twelve postnodal nerves. Wings in the maturer specimens 
lightly tinged with brownish-yellow. Pterostigmata dark 
brown. Excision on hind margin of segment 10 /^-shaped. 
Anal appendages: upper pair dark brown in colour, 
truncate, slightly decurved at their apices. Lower pair 
twice as long as upper pair, directed upwards, straight, 
rather awn-shaped, dark brown at base, distal half black. 
Head : orange-brown above, greenish-white below. 
Prothorax and thorax : coppery-brown above, fading to a 
yellowish-green on under surfaces. 
Abdomen : first segment coppery-brown ; second to sixth 
rich carmine; the remainder dull brown. The central 
segments are scarlet underneath, the anterior and posterior 
segments dull brown. 
Length of abdomen 28*5 mm.; of hind wing 20 mm. 
The species resembles very closely G. erubescens , Selys. 
The principal differences on which the specific determina¬ 
tion rests have been tabulated for me by Mr. H. Campion, 
who has kindly compared the type with an authentic 
specimen of G. erubescens from Queensland. 
G. erubescens , Selys. 
I. A* originates at cubito- 
anal cross-vein. 
II. Excision on hind margin 
of segment 10 semi¬ 
circular. 
III. Lower anal appendages of 
male short and stout, 
reddish in colour. 
C. bellona , n. sp. 
A* originates before level of 
cubito-anal cross-vein. 
Excision on hind margin of 
segment 10 /^-shaped. 
Lower anal appendages of male 
long and slender, dark brown 
in colour, largely marked 
with black. 
The type specimen will be deposited in the British 
Museum. 
