BY K. .1. TILLYABD. 377 



enlarged. 3 narrower, 4-G narrow, 7-10 slightly enlarged. 

 Colour: 1, metallic black; 2, rich orange-red, with very small 

 auricles, a broad transverse apical band of black; 3-7 bright 

 orange-red, marked with metallic lilack as follows — 3, an apical 

 transverse black band projecting in a black line along dorsum 

 to middle of segment; 4-7, apical half black; 8, black, with 

 two large basal orange-red spots reaching nearly to middle of 

 segment; 9-10, brownish on dorsum, sides irregularly marked with 

 black. Appendages: superior very long, slender, 48 mm., 

 slightly wavy, diverging a little at base, then slightly converging; 

 tips roundish; inner margin very hairy, showing, when viewed 

 sideways, a very small obtuse projecting spine one-third from 

 base; colour blackish. Inferior 2 mm., elongate subspatulate, 

 tip rather truncated, slightly upcurved; colour semitransparent 

 orange, with darker tip (Plate x., figs 3, 9). 



9. Total length, 48; abdomen, 36; hindwing, 31 '5 mm. It 

 differs from the male as follows. Wings: pterostigma 2-5 mm., 

 orange; costa of all four wings washed with orange, esjjecially at 

 base, nodus, and pterostigma (this colouring most intense in the 

 young female, persisting in the matui'e female, and only dis- 

 appearing in very matured specimens). Head: front, clypeus, 

 and lahrum orange. T h o r a x as in (J. Abdomen: broader 

 and shorter than in ^\ colour orange-red, slightly duller than in 

 (J; 1, blackish; 2-7 with apical black bands, narrow on 2, then 

 broadening gradually until they are nearly half as broad as the 

 whole segment on 6 and 7: 5-7 with the black running up along 

 the dorsum in a sharp spike; 8, as in ^, but duller; 9, orange, 

 with two small apical black spots: 10, very short, orange. Vulvar 

 lamina veiy short, slightly bifid, I'ounded, black; two small point- 

 tubercles on 9. Appendages 1-3 mm., wide apart, narrow, 

 straight, pointed, brownish, separated by a large bifid tubercle 

 on 10. 



Hah. — Waroona, W'.A.; November-December, 1909 and 1910. 

 Taken by mv friend, Mr. G. F. Berthoud, to whom I dedicate 

 this species. 



Concerning this very remarkable dragonfly, Mr. Berthoud 

 writes to me as follows. " The captures range from October 

 (end) until towards end of December. I never saw a single one 



