— aig. 

a ee rr re egg > eee i 
1923. ] 
Zoological Results of Expedition to Yunnan. 463 
Head. Eyes olivaceous green with a darker green 
cap above: face pale blue marked with black, 3 tiny 
spots at base of labrum and a transverse line across 
epistome. Top of head black, with postocular spots of 
e. 
Prothorax broadly black on dorsum, azure blue at 
lateral suture finely. An incomplete line ie between 
the lateral sutures followed by a spot below 
Legs pale blue, the extensor surfaces beats black. 
Abdomen bide marked with black as follows: Seg- 
ment 1 with a dorsal basal quadrate spot not extending 
to the apical border, segment 2 with a wine-glass 
shaped mark on the dorsum, the base and stem diree- 
ted apicalwards, segments 3 to 6 with dorsal stripes ex- 
apical ring, segment 7 black, except for a narrow basal 
ring and a streak of the ground. colour along the sides, 
segment 8 with a bifid dorsal marking, the marking 
complete at the apex of segment where it forms a broad 
ring, incomplete towards tho base where it ends in two 
ong points. Near the apex, the two pointed parts 
approach to nearly enclose a small spot of the ground- 
colour, segment 9 entirely blue, 10 blue on the dorsum. 
Laterally segments 2 to 7 have longitudinal black stripes 
low down near the ventral surface and extending the 
whole length of the segments. 
Anal appendages small, narrow at the base, dilating 
apicalw ard, armed with a robust inward and down- 
Female. Very similar to the male. The blue colour 
replaced by greenish blue on the face and thorax 
Abdomen azure blue as in the male and with broader 
markings. The goblet marking on the second segment of 
the male is here filled in and extends as far as the base, 
10 is narrowly black at the base. Anal appendages 
black. Legs pipet marked broadly with black. 
Abdomen 26 m Hindwing 21 mm. Postnodal 
nervures 12/10. 
e peculiar markings on abdominal segments 2 oh 
8 in the male will easily distinguish this Coenagrio 
from any other 
Ceriagrion melanurum Selys. 
Ceriagrion melanurum Selys., (pars ), Bull. Acad. Belg. (2) XLII, 
p- 529 (1876),—MacLach., Ann. Mag. Nat. Hist. (6) 
