238 NEW FORMS OF AUSTRALIAN ODONATA, 



Appendages: superior 1-5 mm., forcipate, black; seen from 

 above, the basal two-thirds are thick, the apical third thinner and 

 bent inwards; at the bend, on the inner side, is a slight swelling, 

 and, on the ontside, are three small spines ; tip rounded ; hairs very 

 irregular ; in profile, the thickness is almost uniform, the tips rather 

 blunt and decurved ; there are two small spines above, at the bend, 

 and a moderately large inferior spine under the bend near the tip. 

 Inferior very short, black, subtriangular in profile. (Plate xv,, 

 figs.8 and 9). 



9. Unknown. 



Hab. — Montville, Blackall Ranges, Queensland. This unique male 

 was taken on a rocky creek in the scrub, on October 6th, 1912, by 

 Dr. A. J. Turner, F.E.S., of Brisbane. 



Type: Coll. Tillyard. 



This beautiful species is closely allied £0 A. aureus* Tillyard, 

 from Kuranda, North Queensland. The chief differences are : — In 

 A. aureus, the pterostigma is much shorter (1 mm.) ; the front, 

 clypeus and labrum are golden, and there are two golden spots on 

 each side of prothorax. The gold markings of the thorax are very 

 different. In A. aureus, a wedge of metallic steely black runs in 

 from the interalar ridge along the dorsal ridge, thus cutting the 

 gold in two; on the other hand, the sides of the thorax are nearly 

 all golden in A. aureus. The abdomen of A. aureus has no purplish 

 colouring, and there are small basal golden spots on 2 and 3. The 

 superior appendages of A. aureus are slightly longer, and are with- 

 out the inferior spine found in A. chryso'ides. 



8. Synlestes albicauda, n.sp. 



(J. Total length 53, abdomen 45, forewing 29, hindwing 28 mm. 

 Wings: neuration fine, black ; pterostigma 1-5 mm., thick, rather 

 convex below, black with brown centre; quadrilateral shorter but 

 broader than in S. weyersi Selys, $; postnodals 1 9 in forewing, 

 14 in hindwing. Head: total width 5-5 mm. Eyes rather large, 

 bronze-grey shading to pale grey beneath; antennae slender, 35 



These Proceedings, 1906, xxxi., p. 178. 



