192 NEW AUSTRALIAN SPECIES OP THE FAMILY AGRIONID^K, 



Abdomen cylindrical, 1-2 and 8-10 slightly enlarged. 

 Colour : 1-2 dull black, bluish-grey bloom on the sides of 1 and at 

 base of 2, genital appendages of 2 rather large; 3-7 deep metallic 

 olive-green; 8 steel-coloured; 9 bluish-grey, with a very thin 

 transverse black basal ring; 10 black. 



Appendages. — Superior very small, touching at tips, 

 pointed, black. Inferior minute. (See Plate xvii., fig. 9a). 



g. Unknown. 



H ab. — Redlynch and Cairns, N.Q ; Townsville (1(J) January, 

 1905. Rare. 



I took three males of this insignificant-looking insect flying 

 over billabongs of still water or along the edges of stagnant 

 lagoons. M. Rene Martin remarks that Selys has described 

 a species, A. australis, from a £ oni y> an d that this might possibly 

 be the £ of that species, though the superior size of the present 

 species leads him to regard this as new to science. I know of no 

 Agrionid in which the £ is considerably larger than the Q, and 

 have no doubt that Selys' Q is distinct. 



11. Agriocnemis argentea, n.sp. 



$. Total length, 21-24 mm.; abdomen, 16-19 mm.; wings, fore 

 10-11 mm., hind 9-10 mm. 



Wings. — Pterostigma - 5mm., rhomboidal, brown or black. 

 Nodal Indicator 2 7 1 Last postnodal of forewings not con- 

 tinuous. 1 2 5; 



Head. — Epicranium deep black behind, silvery white in 

 front. Eyes brown above, green beneath, a green post-ocular 

 spot on each. Ocelli and antennce black. Clypens dull white. 

 Labrum black. Labium and mandibles pale dirty brownish. 



Thorax. — Prothorax black, dusted with chalky white. 

 Meso- and metathorax silvery white, with a broad black dorsal 

 band, and on each side a narrower black band. Underside 

 whitish. Leys pale brown, femora dull white. 



Abdomen ver} 7 thin; cylindrical. Colour: the true ground 

 colour is a dull black, but this is completely covered in mature 



