DRAGON-FLIES. 22M 
The characters of the triangles, supra- and sub-triangular spaces are constant. The 
antenodal costals of the hind-wing number 6 6, save in one case, where there are 7 on one 
side. 
All the females have a small area at the base of the hind-wings tinged with bright 
orange; this mark is almost entirely absent, only a trace of it occurring in the younger 
specimens. The yellow and black markings on the body become obscured in old males by 
a dark bluish waxy bloom. 
5. ORTHETRUM SABINA (Dru.). 
Orthetrum sabina Kirby, Cat. Odonata, p. 35. 
Five specimens, 4 ¥, 1 $ from Minikoi. 
These specimens resemble closely examples from Ceylon in the British Museum. 
Sub-Fam. Agrioninae. 
6. ENALLAGMA (?) MALDIVENSIS, sp. n. 
Females with a spine at the apex of the eighth abdominal segment on its ventral side. 
The tenth abdominal segment of the male has no tubercle on its dorsal side. 
The lower sector of the triangle of both fore- and hind-wings originates at the level of 
the basal post-costal cell. The pterostigma is lozenge-shaped, of a dull grey colour, lying 
over about half a cell; it is shghtly smaller in the hind wings than in the front pair. 
Lower lip divided for about a fourth part of its length from its apex. Post-ocular 
markings linear, hinder margin of prothorax not turned up. Abdomen moderately slender, 
legs small, with 5 spines on the external lateral side of the 3rd pair of tibias. 
dg. Coloration for the most part dull bronze-black, variegated as follows :— 
Head. Lower lip yellowish-white, labrum dull blue. The first joint of either antennae, 
and a line connecting them running across the pons, yellowish-white. A pale blue post-ocular 
line extending right across the occiput. 
Prothoraz, Anterior margin pale blue, there is also a pale blue spot on either side 
immediately over the first pair of coxae. 
Thorax. Dorsal surface bronze-black with a pale blue humeral stripe on either side. 
Sides of thorax blue, fading into yellowish-white on the ventral surface. Legs yellowish-white 
with black spines and a black line running along the posterior surface of each femur. 
Abdomen. Segments 1—3 brown-black above, blue at the sides, passing into yellowish- 
white below. Segments 4—7 similar but the blue on the sides is obscure, these segments 
being very slender. Segments 8, 9 blue. Segment 8 has a fine mid-dorsal bronze line 
which widens gradually towards the posterior end of the segment. The posterior half of 
the upper surface of segment 9 and the whole dorsal surface of 10 bronze. Rest of 10 
blue. Appendages black. 
Appendages. Upper pair conical, divaricated, larger than the lower pair, each of them 
with a conical tooth on its ventral surface, directed posteriorly. Lower pair very minute. 
