10(3 Mr. H. Campion on a new Agrionine 



Austroagrion exclamationis, sp. n. 



cJ (holotype). Koolpinyali, Northern Territory, 6. iii. 1913, 

 G. F. Hill, numbered by the collector 421. 



Length of abdomen 19'5 mm. ; length of hind wing 12 mm. 



Labium yellowish white. Labrum, anteclypeus, and 

 genre light green. Postclypeus shining greenish black. 

 Frons light green, with a large lunulate black spot lying a 

 little in advance of the anterior ocellus. A rectangular spot 

 of greenish yellow connects each posterior ocellus with the 

 anterior ocellus. Head behind the antennas black, with 

 greenish reflections. Postocular band narrow and obscure. 

 Basal joint of antenna light green ; second joint blackish ; 

 remainder missing. 



Pronotum black, with greenish reflections; anterior mar- 

 gin broadly light green ; abroad linear spot of light green 

 near each external border ; hind margin narrowly lined with 

 light green, except where a conspicuous median triangular 

 lobe projects backwards. Sides of prothorax light green. 



Thorax proper greenish gold above, with a broad median 

 band of bronze-green, and a narrower juxtahumeral band 

 of the same colour on each side ; sides of thorax pale green, 

 with a short black line near the base of the first lateral 

 suture, and a still shorter black line, or rather spot, at the 

 base of the second lateral suture. 



Legs whitish, with some brownish black on the femora 

 externally ; spines of femur and tibia and tips of claws 

 black. 



Pterostigma pale greenish yellow. Eight postnodals in 

 the fore wings, and six or seven in the hind wings. M 2 

 originating a little proximal to the fourth postnodal in the 

 fore wings and at or a little before the third postnodal in the 

 hind wings. M la arises a little distal to the sixth or seventh 

 postnodal in the fore wings and at the sixth postnodal in the 

 hind wings. Venation otherwise similar to that of A. cyane. 



Abdomen blue, with bronze-black markings. Segment 1 

 with the dorsum almost entirely bronze-black; 2 with a spot 

 extending from base to apex, slightly constricted a little 

 beyond the middle ; 3 occupied for its entire length, except 

 quite near the base, by a spot somewhat resembling the note 

 of exclamation (!) in form, the greatest constriction occurring 

 at about three-quarters the length of the segment; 4 and 5 

 marked much like 3, but with a little more of the blue 

 ground-colour exposed basally ; 6 and 7 entirely bronze-black, 

 except just near the base ; S and 9 mostly blue, with a large, 



