BY R. J. TILLYARD. 583 



f) inm.; at 5-6, 2 mm.; at 8-10, 3-5 mm. Colour h]a,ck and 3'ellow, 

 as follows : 1, blackish, hairy, a faint yellowisli dorsal line, and a 

 patch of yellow on sides; 2, black with a fine dorsal line, a fine 

 transverse basal line, a slightly wider transverse apical band, and 

 most of sides, yellow; auricles flat, inconspicuous, yellow; 3-4, 

 black, broader basal and apical bands of yellow, joined by a brtiad 

 sublateral band crossed by the black line of the carinae; con- 

 spicuous black bands along all sutures; 5-7, black, with irregular 

 yellow basal and apical bands of yellow diminishing in width 

 from 5 to 7; 8, black with a fine basal yellow line and a con- 

 spicuous apical yellow band; 9, basal three-fifths black, apical 

 two-fifths irregularly yellow; 10, black, a touch of yellow basally 

 and on the curved apical borders(Plate Ixii., fig. 11). Append- 

 ages: sujyerior 7 mm. long, by 5*5 mm. bi'oad, black, leaf-like, 

 shaped as in P. i7ige7itissima T\\\ya,rd, but much smaller. Inferior 

 black touched with brown, 2 mm. long, by 3 mm. wide, trape- 

 zoidal, curved, a slight projecting median point underneath; 

 shape intermediate between that of P. iiigentissima and P. 

 giycmtea (Plato Ixii., fig,l2). 



^.Unique. Total length 95, abdomen 69, forewing 62, hind- 

 wing 01, expanse 130 mm. 



Differs from male in its shorter and more cylindrical abdomen; 

 breadth at 1-2, 5 mm.; at 3-4, 4'5 mm.; at 5-9, 4 mm.; 10, slightly 

 narrower. Yellow markings all broader and more conspicuous. 

 Appendages \mxn., short, straight, black, tips rather blunt, with 

 two stiff' hairs projecting from each. Ovipositor reaching just to 

 end of al)domen, upcurved, carrying two filaments, and, on the 

 keel between and below them, a row of sharp bristles set close 

 together. 



/Taft. — Cooktown, N.Q., six males taken by myself; January, 

 1908. Kuranda, N.Q., one female taken by Mr. F. P. Dodd; 

 December, 1907. 



Types: (J$, Coll. Tillyard. 



This very beautiful insect is intermediate in size between P. 

 ingentissima Tillyard, and P. gigantea Leach, but resembles the 

 former in its slenderness of build. It may be easily distinguished 

 from both by the conspicuous black and yellow colour-pattern, 



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