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, but^ 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 variet} at Palla], near Bingara, in the North-west of jNew 

 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.). Comparmg 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. (Platelxxiv., figs.4:,5,7). 



^. Total length 33'5, abdomen 2 i, /o7'e7ving 24:, hindwing 22'5inia.. 



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, 4-5 . Membranide practically nil (the very minutest trace). 



5, 5 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: prothorax very small, black, with a dorsal and two 

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

 collar next thorax. Meso- and metathorax velvety black marked 

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

 ing into a spot, close up to prothorax, about 0-6 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 bauds joining and branch- 



