QQ MR. R. J. TILLYARD : LIFE-HISTORIES AND 



from the north, lias not succeeded in crossing over to Tasmania, though it is 

 exceedingly common along-the Victorian coast-line. This evidence seems to 

 point very conclusively to the fact that ^■3^schna is a much more archaic 

 genus than Anax, the former being Tertiary and the latter post-Tertiary as 

 regards the time of its appearance on this continent. 

 Types : c? ? , Coll. Selys. (Australia.) 



B. ANAX SERIES. 



M2 arching strongly and suddenly upwards at about the level of the end of 

 the pterostigma. Rs not clearly forked, but giving off posteriorly a set 

 of nearly parallel slanting branches, so that the cells between it and Rspl lie 

 in regular slanting sets ; the last of these branches is more oblique than the 

 others, and represents the lower branch of the " fork." Sectors of arculus 

 arising close to its upper end. Pterostigma long, braced. Hind-wing widest 

 near base, with anal border of male rounded, the membranule very large and 

 elongated. No auricles present in male. Female with dentigerous plate 

 reduced to a very finely denticulate rounded prominence. 



Larvce with bifid superior appendage, very large head and eyes, no setae on 

 lateral lobes of labium. Papillae developed on rectal gills. 



Only one genus, Anax, is represented in this series. Three species occur 

 in Australia. 



Genus 1. Anax, Leach. 



Characters as given (see above). Type : A. imperator, Leach. 



Anax guttatus (Burm.). 



^sclina guttata, Burm. Handb. Entom. ii. (1839) p. 840. 



This fine species is common in the Oriental Region. The first Australian 

 record for it was made in 1905, when I discovered it on the Carrington 

 Swamp, near Atherton, N. Queensland. Since then I have taken it at 

 Townsville, Cairns, and Cooktown. In the latter locality it is quite common 

 on all the swamps. I have also received it from Port Darwin (Mr. F. P. 

 Dodd). All the specimens are of typical form, without any trace of a 

 T-mark on the front. I do not know the larva. - 



Anax gibbosulus, Rambur. 



Eambur, Hist. Nat. Nevropt. 1842, p. 187. 



This species is a new record for Australia. Mr. F. P. Dodd sent me a 

 fine male and two females from Port Darwin, December 1908, and informed 

 me that they were not uncommon there. To this species I am now also able 

 to refer a single female taken by me at Atherton, January 1905, which I had 

 placed temporarily with my series of A. guttatus. 



A. gibbosulus is a larger and much more gracefully built species than 



