178 NEW AUSTRALIAN SPECIES OF THE FAMILY AGRIOXIDjE, 



1. Argiolestes aureus, n.sp. 



£. Total length, 39 mm.; abdomen, 31 mm; wings, 24 mm. 



Wings. — Rather broad, rounded at tips; neuration black; ptero- 

 stigma broad, rhomboidal, black, 1 mm. Nodal Indicator ||2 17-18 



||2 17-18 



H e ad. — Epicranium* orange, a black transverse band between 

 the eyes, enclosing the antennse and the ocellar area, which are 

 black. Clypeus and labruni orange. Labium and mandibles 

 deep black. 



Thorax. — Prolhorax black; on either side a large orange 

 xpot followed by two tiny elongated marks, one below and the 

 other behind it, of the same colour. Meso- and metathorax bright 

 orange above and on sidrs; interalar space deep black; scuta, 

 scutelk-e, and wing-joins touched with orange; this black coloura- 

 tion extends in front of the fore wing joins and forwards along 

 the dorsal ridge, narrowing down almost to a point, thus forming 

 a black spear-head mark cleaving the rich orange of the thorax 

 in two. On either side, near the mesocoxa is a large squarish 

 black patch; there is also a small black spot just below the hind 

 wing-joins. " Underside marked with black and dull yellowish- 

 brown. Legs black, spiny. 



Abdomen thin, cylindrical, 9-10 slightly enlarged. Colour 

 metallic black throughout, 2-3 with a basal spot of orange-brown 

 on either side, close up to suture. 



Appendages. — Superior l - 5mm., large, black, furcate, 

 slightly separated at bases, tips touching Inferior minute. 

 (See Plate xvii., fig. la). 



Q. Considerably larger than £. The two specimens measured 

 differed in size as follows : — Total length, a 37 mm., 6 41 mm.; 

 abdomen, a 28-5 mm., b 32 mm.; wings, a 27 mm., b 29 mm. 



Wings as in J 1 . 



* The term " epicranium " as applied to the Agrionida j , includes the 

 occiput, vertex and ocellar area, and the front. 



