DESCRIPTIONS OF AUSTRALIAN ^SCHNINiE. 73 



appendages. In G. mocsaryi the male superior appendages are distinctly- 

 curved, the apical half of each being flat and leaf-like, length 6"5 mm. ; the 

 inferior is 3 mm., triangular at base, but with tip elongated. In G. rosen- 

 hergi the male superiors are very hairy, long, and straight, 8 5 mm., not 

 much widened towards tips, which end in a tiny point ; the inferior only 

 1*8 mm., narrow subtriangular. In both species the female appendages are 

 very long, and seldom found intact even if the specimen be captured by 

 hand. The auricles of the male are twice as large in G. mocsaryi as in 

 G. ro.^enhergi, and the scuta, scutella. and wing-joins are deep blue. 



Habitat. North Queensland (Cairns, Kuranda, Cooktown), New Guinea, 

 Lombok. 



Types : (^ ? , Coll. Forster. (Astrolabe Bay.) 



G-YNACANTHA DOHRNI, Kriiger. 



Kruger, Stettin, entom. Zeit. lix. (1898) p. 285. 



The claim of this species to inclusion in our ectogenic Australian Odonata 

 rests solely on one specimen in the Leyden Museum, labelled '' C-ooktown." 

 It is quite likely that it occurs there, but I have never taken it, nor are there 

 any specimens of it amongst the very large number of Gynacantlia from 

 North Queensland in the Macleay Museum, Sydney. 



Easily distinguished from the two preceding species by its smaller size, 

 much denser reticulation, excessively slender abdomen (1-2 much swollen, 

 with large auricles in male), and by the slender superior appendages of the 

 male carrying a small inner projection or tubercle near their bases. 



Types : (^ ? , Coll. Kruger. (Sumatra.) 



Genus 2. Austroqynacantha, Tillyard *. 



Characters as given (see above). 



Type : Austrogynacantlia heterogena, Tillyard. 



It is unnecessary to repeat the argument of my previous paper in favour 

 of the recognition of this genus. In the narrowing of the anal triangle of 

 the male, and the more regularly curved M2 under the pterostigma, not to 

 mention the distinct differences in the shape of the abdomen, we have strong 

 and constant characters of full generic value. Since 1908 I have fortunately 

 been able to see with my own eyes this very beautiful insect in flight and to 

 watch its habits. These are quite unlike those of a Gynacantlia. It flies in 

 broad daylight, and has the habits of a small Austroceschna, besides possessing 

 a coloration somewhat similar to that of some members of the same genus in 

 general effect. 



* " On the new Genus Austrogynacantlia^^* Proc, Linn. Soc. N.S.W. xxxiii. (1908) p. 423. 



