RY R. .T. TILLVARI). 587 



DiPiiLEUiA HYBKIDOIDES, n.sp. (Plate XX., figs. 5 and 9). 



(J. Total length 52, abdomen 40, hindiving 33, greatest bread tli 

 7 ram. 



Wings: nenration black. A broad transverse dark brown 

 band crossing all four wings, from midway between nodus to the 

 beginning or middle of pterostigma. Pterostigma 3-3 mm., black. 

 Six antenodida on all four wings; postnodals 26 on fore, 18-22 on 

 hind wings. Head: blackish with two brown occipital spots; 

 labium pale brownish. (The colouring is badly faded. In the 

 live insect the spots are probably blue, and there may be other 

 markings). Thorax: prothorax black, with two large spots, 

 probably blue. Mesa- and metathorax probably bright blue, with 

 a black dorsal line, and, on each side, narrow antehuraeral and 

 lower lateral black stripes (as in all other known species of the 

 genus ). Legs blackish; measurements of foreleg: — femur 4 mm., 

 tibia 5 mm., tarsus 1-7 mm. Abdomen slender, cylindrical; 

 1-6 tapering very slightly, 7-10 slightly enlarged again. Colour 

 light blue (much faded except in one or two places), marked with 

 black, as far as the pattern is discernible, as follows — 1, a trans- 

 verse basal bar; 2, a fine dorsal line and large cross-piece, one- 

 fourth from apex of segment; 3, a fine dorsal line along basal 

 third of segment; 3-6, two small slanting lines near apex; 5-6, 

 two faint dots near base; 7-9, clear blue all over; 10, blue, pro- 

 bably shaded apically with brown or black. Appendages: 

 superior 1-6 mm., forcipate, very slender, tapering to tips, black 

 (or, possibly, blue in the living insect); a large inferior tooth or 

 spine one-third from base; inner margin finely serrated near tips, 

 outer margin with small dense hairs. Seen sideways, they are 

 remarkably upcurved. Inferior 0-3 mm., thick, subtruncate, 

 black, with an inner pointed projecting portion (Plate xx., figs. 

 5a, h). 



A second male, evidently less mature, has the transverse band- 

 ing on the wings very pale. 



Q. Unknown. 



Hah. — Kuranda, North Queensland. 



50 



