57: 



ON SOME AUSTRALIAN AXISOPTERA, WITH 

 DESCRIPTIONS OF NEW SPECIES. 



By R. J. TiLLvARD, M.A., F.E.S. 



(Plate Ixii.) 



The following species are dealt with in this paper : — 

 Syuthemw spiniger, n.sp. 

 Metathemis brevistyla subjuncta, n.subsp. 

 Metathemis guttata aurolineata, n.subsp. 

 Anstrogomphus doddi Tilly ard. 

 Austrogomphus manifestus Tillyard. 

 Austrogomjjhus armiger, n.sp. 

 AustrocBschna parvistigma Selys. 

 Austro(fschna muUipunctata Martin. 

 Austroceschna forcipata Tillyard. 

 Petalura pulcheri'ima, n.sp. 



Subfamily Corduliin.e. 



I.Synthemis spiniger, n.sp. 



(J(unique). Total length 53, abdomen 40, forewing 32'5, hind- 

 wing 31-5 mm. 



Wings: neuration black, bases of wings touched with deep 

 black bordered by saffron; a distinct round creamy spot at 

 extreme base of costa on all four wings. Pterostigma 2-7 mm.; 

 black. One basilar, four submedian, and one hypertrigonal cross- 

 veins; triangles free normally (right hindwing triangle once 

 crossed); post-trig onals of forewing, one double followed by 6-7 

 single rows. Nodal Indicator \\\Z, 7-8 I H e a d : ver<e.x black, 

 hairy; front hairy, deeply and ||9-11, 9-1 1| widely cleft in middle, 

 black at base and in cleft, with sides and lower parts glaucous 

 dirty yellowish-grey; clypeus and upper part of labrum dirty 

 greyish-brown; rest of labrum dull ochreous; labium ochreous. 

 Thorax: prothorax black. Meso- and metathorax black above, 

 shading to dark brown on shoulders; a fine yellow line along 

 dorsal ridge, and a pair of round yellow humeral spots close up 



