220 SOME: NOTES ON ORIENTAL DRAGONFLIES. 
and with a well-developed extero-lateral tooth on 
each at about its middle. 
Length of hind-wing 40 mm. (@ unknown). 
M. cydippe n. sp. 
Borneo. (Banka? Sumatra ?) 
b* .8 Lower anal appendage about equal in length to 
upper pau, the latter with recurved pica and with 
the extero-lateral tooth so reduced as to be scarcely 
discoverable. 
Length of hind-wing ¢ 43 mm. @ 46 mm. 
‘ M. euterpe Laidlaw. 
Borneo. 
Il. Group of JI. cincta Ramb. 
Segments 2-6 of abdomen black or brownish-black without. 
metallic lustre. 2-3 at least with yellow markings on the dorsum. 
Front of head very dark brown, pyramids of frons black, shghtly 
metallic. No definite humeral band on dorsum of synthorax. 
Costal nerve black. Males with pointed triangular process on 
dorsum of segment 10 of abdomen. 
Pterostigma about 3 mm. 
M. cincta Ramb. age. 
Ill. Group of MW. calhiope Ris (defined by Ris). 
Thorax black, with rich metallic lustre, with a humeral band. 
incomplete above. Frons black with metallic lustre, ante-clypeus 
black or dark brown, post-clypeus (except in one or two species) 
yellow. Costal nerve usually entirely black. Segments 2-6 of 
abdomen black (or in one or two species metallic), the second. 
segment at least with yellow markings on the dorsum. 6 without 
dorsal process on the tenth segment of the abdomen. In most. 
species the upper anal appendages straight or incurved apically. 
a. 46 Post-clypeus dark brown, segments 2-6 of abdomen 
with metallic green lustre, an arine’ save for a pair of 
small transverse spots on 2. Upper anal appendage with. 
extero-lateral tooth near the apex, which is rather ab- 
ruptly inflected. Lower appendage of about equal length. 
Distal third of genital hamule abruptly narrowed, slender, 
sickle-shaped. Hind-wing g 34 mm. (@ unknown). 
M. corycia N. sp- 
Borneo. 
a* Post-clypeus pale yellow; segment 2 of abdomen with 
yellow ring, narrow dorsally and not covering the base of 
the segment, whilst 3-5 have small paired spots dorsally 
immediately in front of the transverse carina of each, 
(those on 4-5 very small). Segment 7 with yellow ring 
Jour. Straits Branch 
