380 AUSTRALIAN CORDULIINiE, 



very hairy at end. A pp e ii (laities wide apart, I'Smm. long, 

 straight, pointed, black. 



Hab. — Waroona, W.A.; ^'ery rare. Tln-ee males and three 

 females in good eondition, taken by Mr. G. F. Berthoud, the 

 captures ranging from the end of November to the third week in 

 December, 1910. Of this dragonfly, Mr. Berthoud writes— " It 

 is a beautiful active insect, found in the same locality as, and with 

 similar habits to //. herthondi; in life, the colour is a rich dark 

 bronze-green with fine metallic sheen, but, in dying, their beauty 

 fades a little." The description given above of the liabits of H. 

 berfhoiidi applies also, he says, to this species. 



Types : ^^, and cotypes, in my collection. 



7. Macromia viridescens, n.sp. (Plate x., fig. 1 1). 



2. Unicjue. A magnificent Sj^ecies : total length, 66; abdomen, 

 49; forewing, 51; hindwing, 48 mm. 



Wings: neurafion black, strcmg; bases saffroned for about 

 10 mm. in forewings, T)-! nun. in hindwings. I'/f^rosfU/ma very 

 sma//, 1 -5 mm., dull semitransparent brown, scarcely co\ering 

 one cellule (Plate x., fig. 11 ). Xodal Indicator'^ 17-18 10-11 1 

 Memhrannle in forewing 2 mm., narrow, greyish; |! lO-I 1 11-12 | 

 in hindwing 4-5 mm., narrow, pointed, greyish shading to 

 dull brown. Anal loop of hindwing containing 1 6 cells; con- 

 siderably wider than deep. Head: eypti very large, brown; 

 vertex highly tubercled, small, brilliant metallic green; front 

 downy, dee{)ly cleft medially, rich metallic violet above, 

 shading to brownish near clypeus; postclypeus very wide, yellow; 

 anteclypeu^ dark brown, a sharj) triangular median portion of the 

 brown mounting into the postclypeus; lahrum shining black; 

 labium, very large, brown; genff dark brown. Thorax deep 

 brilliant metallic-green all over, except for a thin yellow dorsal 

 line, a pair of short straight humfral yellow bands ending quite 

 2 mm. before the interalar ridge (which is itself broadly yellow), 

 and, on each side, a fairly broad straight lateral yellow band 

 enck)sing the blackish mesospiracle; uuderxide brownish; notnm 

 veiy dark brown, crossed by the continuous later-al bands. Leys 

 black, coxfie brown; mnnei'ous Icmg spines on tiliiie. A bd o m e n 



