576 ON SOME AUSTRALIAN ANISOPTERA, 



triangular, downy, placed close up toeyes(Plate Ixii., fig. 2). Ab- 

 domen fairly stout, cylindrical, 1-2 enlarged, 7-9 slightly enlax-ged. 

 Colour: 1, yellow; 2, very dark brown with a thick yellow sub- 

 oval dorsal mark, and two large lateral yellow spots; 3-6, black, 

 with two large seniio\al basal yellow spots; 7, basal half yellow, 

 with irregular black lines, apical half black; 8, black, with two 

 large yellow spots; 9, black, with two small yellow spots; 10, 

 black. Appendages 0-7 nnn., slightly pointed, yellow. Vulvar 

 scale with two pointed short branches. 



Ilab. — Kuranda, N.Q., and Pallal, North- western New South 

 Wales. November to December. 



Types : ^<^, Coll. Tillyard. 



5. AusTROGOMPHUS MANIFESTUS Tillyard. 



A unique female of this rare species was described by me (luc. 

 ciL, p.248) in 1909, from Karaerunga, N.Q. At Pallal, N.S.VV., 

 I took four males and three females, two in the act of emergence. 



^. Total length 49, abdomen Zl,forewing 26, hindtving 25mm. 



Wings: pterostigma black, 2-8 mm. Nodal Indicator \\l '2 7-81 

 Head and thorax as in female. Abdomen long and )| 8 8J 

 slender, 1-2 much enlarged, 3-6 and part of 7 very slender, rest 

 of 7 and whole of 8 much swollen, 9 long and tapering, 10 taper- 

 ing. Breadth : across 1, 3 mm.; across 3-6, 1 mm.; across 8, 

 2-5 mm.; across end of 10, 1-5 mm.; length of 9, 2-7 mm.; of 10, 

 1"6 mm. Colour black marked with yellow as follows: 1, a broad 

 dorsal mark, and sides yellow; 2, a rather irregular dorsal mark, 

 sides and auricles yellow; 3-6, a basal band and a suspicion of a 

 dorsal line along 2 and part of 3; 7, basal two-fifths yellow; 8, a 

 pair of medium basal lateral spots and a pair of small apical 

 lateral spots; 9-10, black with yellow lines in sutures; sides of 8 

 and 9 enlarged downwards into leaf-like folds or sheaths, larger 

 in 8 than in 9. Appendages : superior 1 mm., yellow, sharply 

 pointed and much upturned, carrying an elongate, downcurved, 

 black tubercle beneath. Inferior 0-6 mm., black, upcurved, 

 bifurcated, downy, tips rounded (Plate Ixii., figs.3, 4). 



2. A correction is necessary in the description already pub- 

 lished. The occiput is black, hairy, with a large central yellow 



