482 NEW AUSTRALIAN SPECIES OF THE FAMILY L1BELLULIDM, 



below. Legs light brown. Abdomen: 1-3 enormously swollen, 

 rest very slender, subcylindrical, slightly thickest in the middle. 

 Colour, black shaded with deep maroon in parts; 10 carries a hairy 

 tuft below the inferior appendage. Appendages: Superior 

 2*5 mm., rather close together, parallel, curving slightly down- 

 wards; black, bases brown. Inferior 1*7 mm., broadly triangular- 

 lanceolate, pointed upwards; light brown. 



Q. Differs very slightly from male, as follows: — Total length, 

 52 mm.; abdomen, 38mm. Wings: 6-7 postnodals; pterostigma 

 nearly 3 mm. Head: Vertex and antennae brown; front pale 

 brown above. Thorax pale dirty brown. Abdomen: 1-3 

 enormously swollen, rest not quite as slender as in male. Colour, 

 brown, sutures black. Segment 9 carries a small pointed tubercle 

 underneath; 10 has a large swelling underneath, between and below 

 the appendages. Between 9 and 10, below, is a small ridge carrying 

 a few bristles bent downwards and backwards. Appendages 

 wide apart, pointed, curving outwards, 1-5 mm. Colour brown, 

 shading to dull black at tips. 



Hob. — Kamerunga, near Cairns, N.Q.; rare; January. 



2. Rhyothemis Alcestis, n.sp. 



Q. Unique. Total length 27 mm.; abdomen 17 mm.; wings, 

 fore 27-5 mm., hind 26'5mm. 



Wings: Pterostigma short, l'8mm., black. Membranule 

 narrow, rather long, about 2-5 mm., pale dirty greyish-brown. 

 Nodal Indicator 9 10-1 1 Basal half of all wings coloured black, 

 with metallic 6 10-11 reflections, as follows : in the forewings 

 the colour-line runs from the nodus exactly across the wings to 

 the postcostal margin, ending at a point nearly 4 mm. from the 

 bottom of the wing-triangle, and is slightly irregular in shape; in 

 the hindwing the colourdine starts from the first postnodal and 

 proceeds, bending slightly outwards, to about the middle of the 

 wing; it then takes an irregular semicircular curve inwards, and 

 ends up somewhere about half-way along the postcostal margin. 

 Head: Vertex shiny metallic black, small, hairy, tubercled; eyes 

 brown; antennrm black, 1-7 mm. Front hairy, cleft medially, very 

 deep metallic green above, shading to brown next the clypeus. 



