DESCRIPTIOIs^S Of AUSTltALlAX+ ^SCHNIN^. 5 



divided the subfamily into tribes, which I have named. In the main, I find 

 myself in agreement with the work already carried out by others, especially 

 as regards the latest arrangement suggested by Walker. 



Fig. 3. — Wings of Aischna brecistyla, Eamb., S > to show new notation. 



A, anal vein; A-^, A^, As, its branches; Ac, anal crossing, or tirst postcnbital ; 

 A', secondary anal vein ; aa, anal angle ; al, anal loop ; are, arculus ; at, anal 

 triangle ; ai'i, ax\, first and sixth antenodals, thickened ; be, brace-vein ; Br, bridge ; 

 C, costa ; cas, cubito-anal or submedian space ; cs, costal space ; Ca, cubitns ; 

 Cu^, Cu.2, its branches ; df, discoidal field ; M, median vein ; M^, M,, M^, M^, its 

 branches : M-^_^ upper, M^ lower sector of arculns ; Mspl, median supplement ; 

 m, membranule ; ms, median or basilar space ; N, nodus ; O, oblique vein ; 

 pt, pterostigma ; px, first postnodal ; i?, radius ; iti, its upper branch ; Rs, radial 

 sector ; Rspl, radial supplement ; s, supertriangle, or hypertrigonal space ; scs, sub- 

 costal space ; &, subcosta ; Sn, subnodus; st, s abtri angle ; t, triangle; Ts, trigonal 

 supplement. 



General Cltaracters of the Suhfamihj . 



Imagines. — The JEschnince are the large swift-flying Dragonflies that are 

 so often seen hawking about, sometimes far from water, and more especially 

 in the afternoon and early evening. Their colour-scheme varies from dull 

 browns and blacks to beautiful patterns of green, blue, or yellow on a dark 

 ground. Bright blues and reds, and metallic colourings, sucl) as are met 

 with in the Libellulidge, are absent in this group. With the exception of tlie 

 Petaliini, which I have included in the subfamily on good grounds, but 

 which nevertheless depart considerably from the generally accepted idea of 



