430 ON THE NEW GENUS AUSTROGYNACANTHA, 



which are brown — 4-7, a fine dorsal line, a pair of small round 

 central spots close together, a pair of longitudinal spots wider 

 apart, very little yellow on sides — 8, a touch of yellow at base, 

 a pair of spots one-third from base, a pair of large anal spots, 

 wider apart — 9, a pair of very small spots at base; a pair of anal 

 spots wide apart — 10, a pair of anal spots. Appendages: 

 superior long and slender, 5 mm., narrow sublanceolate, black; 

 projecting slightly below inwards just before half-way so as to 

 form a very obtuse ledge, carrying a series of longish hairs on 

 inner margin. Inferior nearly straight, slightly upcurved, 

 hollow above, narrow subtriangular, 2 mm. (Plate v. figs. 2 and 

 3 — the hairs are not quite as dense as shown). 



£. Very similar to £ but somewhat larger. Total length 60- 

 65 mm.; abdomen 48-50 mm.; fore- and hindwings 39-41 mm.; 

 pterostigma paler. Abdomen slightly thicker than in <J, 

 marked as in ^, but the longitudinal dorsal ray more conspicuous, 

 wider on first half of seg. 2, and on 3-7 slightly enlarged basally 

 into a small triangular area; 9 somewhat larger than 8, 4 mm. 

 long; 10 very short and narrow. Ovipositor with a very long 

 and narrow spike, dark brown, reaching to below the end of 10 

 (not shown in the Plate); anal end of 9 carrying below two small 

 2-jointed filaments ; 10 projecting below into a conspicuous 

 tongue furnished with two prongs or forks curving downwards, 

 their length being about equal to the distance which the tongue 

 itself projects beyond the base of the rounded end of 10; this 

 rounded end forming a pale downy tubercle placed above the 

 tongue. Appendages very fragile [nearly always missing], 

 3 mm., dark brown, slender, leaf-like, narrow lanceolate, with 

 hairs on inner margin. (Plate v. figs. 4, 5). 



Hab. — Northern and Central Queensland : Rockhampton; 

 Cooktown (February). 



Types: The male is in my collection, the female in Coll. 

 de Selys. 



