BY R. J. TILLYARD. 713 



Gayndah (Q.)- I also noted the prevalence, at Kuranda, of this 

 larger form of female. 



In North Queensland, I found the females of N. eludens emerg- 

 ing in January, while the males were also quite fresh, butj some- 

 what more common. I was, therefore, rather surprised at taking, 

 early in December, 1910, a very much torn and battered female of 

 the larger variety at Pallal, near Bingara, in the North-west of New 

 South Wales. It seemed probable that this was a remnant of an 

 earlier brood, or possibly even of a distinct and much earlier 

 species. The problem was solved by me last year, when I found 

 both sexes of the early form fully matured at the end of Novem- 

 ber, on the Bellinger River (N.S.W.). Comparing them with the 

 types of my N. eludens, it was at once evident that they were a 

 new and very distinct species, which I now propose to describe 

 under the name of Nannophlebia risi n.sp., in honour of my friend, 

 Dr. F. Ris:— 



Nannophlebia risi, n.sp. (Plate Ixxiv., figs. 4,5,7).- 

 ^.Total length 33-5, abdomen'24:, forewiiig 2i, hiiidtving 22-omm. 

 Wings (fig. 4) : lightly but considerably suffused with pale 

 yellow from base up to nodus. Fterostigma 1'8 mm., black, fairly 

 thick, covering one cellule or a little over. Nodal Indicator 

 |6, 4-51. Alembranule practically nil (the very minutest trace). 

 JJS, 5 I Head: eyes rich green in the living insect (brown 

 when dead), meeting for quite 1-5 mm. Vertex tubercled, pale 

 yellow surrounded by black, central ocellus large, shining orange; 

 front high, deeply cleft, pale yellow, thickly pitted, and carrying 

 fine black hairs; clypeus and labrum yellow, labium dull yellowish. 

 Thorax: ^nothorax very small, black, with a dorsal and two 

 lateral yellow spots; a conspicuous ridge of long brown hairs on 

 collar next thorax. Mesa- and metathorax velvety black marked 

 with lemon-yellow as follows: — a conspicuous dorsal line expand- 

 ing into a spot, close up to prothorax, about 6 mm . across, shaped 

 like a combined "cup and ball"; a pair of wavy humeral bands 

 narrowing and converging slightly towards wing-bases; the latter 

 black, with three yellow spots. Sides of thorax yellow, with an 

 intricate pattern of three irregular black bands joining and branch- 



