Odonata from New Caledonia. 61 



figured for Synthemis leachii, Selys, S, cyanitincta, Tillyard, 

 and Pentuthemis membrmmlata, Karsch. 



In the distribution of pale spots upon the abdomen, 

 S. flexicauda reminds one of S. leachii fi'om South Western 

 Australia, but the new species is the only member of the 

 Synthemini in which the superior anal appendages of the 

 male are parallel and contiguous for any portion of their 

 length. 



Syntheinis fenella, sp. n. 



1 (? (holotype), Mt. Mou, 20. iii. 14 (725). 



Length of abdomen 29 mm. ; hind wing 25*5 mm. 



Labium metallic black ; median lobe bright yellow. 

 Labrum metallic black. Anteclypeus greyish white. Post- 

 clypeus metallic black, with a large cuneiform bright yellow 

 spot on each side. Frons metallic black ; a very large, 

 somewhat lunulate, bright yellow spot on each side of the 

 median furrow. Vertex and occipital triangle metallic 

 black. 



Prothorax metallic black ; the anterior border broadly 

 edged with bright yellow. 



Meso-metathorax dull black dorsally ; metallic black, with 

 bluish or greenish reflections at sides : three broad bright 

 yellow stripes on each side ; the first, antehumeral in 

 position, deeply excavated externally in its posterior third ; 

 the second enclosing the metastigma; and the third lying 

 upon the raetepimeron. 



Wings (PI. IX. fig. 16) entirely hyaline, save for a very 

 slight trace of yellowish brown at the base. Costa yellow, 

 with a yellow basal spot ; other veins black. Pterostigma 

 1*5 mm. long, very broad, dark reddish bro^vu, unbraced. 

 Membranule cinereous. A basal subcostal cross-vein pre- 

 sent in each wing. Most of the antenodals in the costal 

 space exactly coincident with the subcostal antenodals ; 

 j^j^. Postnodals j^. Cross-veins in median space ^ ; in 

 cubito-aual space g^ ; in supertriangle ^^ ; and in bridge 

 space 5^. Arculus arising before the third antenodal in 

 the fore wings, and after the third antenodal in the hind 

 wings. All triangles and subtriangles free. Discoidal area 

 in fore and hind wings for the most part filled with single 

 cells to about the level of the origin of Mj^j- Anal loop in 

 hind wing in two portions, tlie distal enclosure containing 

 8-10 cells, and the proximal enclosure 4-6 cells. 



Legs black ; coxa and femur of fore legs mainly yellow ; 

 tibial keels also yellow. 



