BY R. J. TILLYARD. 411 



species has never been described, and as de Selys' description 

 applies onl}^ to a unique and somewhat immature male in Hagen's 

 collection, I give below a short description of my own series, with 

 a special description of a female typo. 



A.Blue Mountain Series. — Specimens from this locality seem 

 to be identical with de Selys' type-male(locality "New Holland"), 

 especially as regards size, number of antenodals, and form of 

 pterostigma. 



^. Total length 32; abdomen, 26; forewing, 21; hindwing, 20mm. 



Wings lightly suffused with a brownish tinge, postnodals 

 13-17, pterostigma very dark brown, 1*2 mm., slightly trapezoidal. 

 Head black, labium, and sides of face next to e3'es straw-coloured. 

 Thorax : p7'othorax black with a yellowish band on each side, 

 Meso- and metathorax black, with a slender humeral band in two 

 pieces, separated by a fine black stem; the forwai'd portion of 

 the band slightly convex to dorsal ridge, the hinder, slightly sub- 

 humeral, concave, shorter and pointed forward; colour of band 

 usually straw or yellowish, but suffused with grey pruinescence 

 in very mature specimens; rest of sides black, with two slanting 

 yellowish intrusions, I'Smm. long and A'ery slender, from the pale 

 yellow underside. Legs black, with pale underside to femora. 

 Abdomen very cylindrical, rather slender in some specimens, 

 stouter in others; metallic bronzy-black marked as follows:— sides 

 of 1 and a lateral stripe on 2, ochreous; 3-7, a small ochreous 

 basal spot on each side. After the insect has been on the wing 

 for some time, a grey pruinescence begins to form in a very 

 beautiful manner and in the following order : — firstl}', a beavitiful 

 dorsal mark on 2, in form usually like a cup with a short stem 

 and long body; together with a touch of grey on 1. Then, on 3, 

 the dorsal area becomes entirely pruinescent except for two con- 

 spicuous black spots near apex; then 4, similarly; then 5, and 

 finally 6 and 7, the pruinescence being, of course, most marked at 

 any given stage on 2 and the segments following. In my series, the 

 majority of specim,ens are not pruinescent; a few are pruinescent 

 on 1-2 or 1-3 only, one or two on 1-5, and several on 1-7, this being 

 the limit as far as I can ascertain. Segments S-IO black, often 

 with a distinct bronze tint; 10 very short. Appendages; 



