252 ON SOME RARE AUSTRALIAN GOMPHIN^, 



a fine mid-dorsal line. 1 mm. long; half-collar marks and dorsal 

 stripes combined together on each side to form an excellent 

 '"seven-mark," of which the head is rather short, thick, and 

 blunt; antehumeral stripe narrow, ending in a subtriangular spot 

 near wing-joins. The sides are nearly all bright yellow, there 

 being a touch of black on E^ a thin irregular black mark along 

 the first lateral suture, and a black spot over the spiracle (see 

 Plate xxii., fig. 6); iving-joins black, spotted with yellow; scuta 

 and sGutella broadly yellow. Legs black, underside of profemora 

 yellow, coxse pale brownish. Abdomen: 1-2 swollen, 3-6 

 slender, 7-10 swollen. Colour black, marked with j^ellow as 

 follows : 1-2, a large dorsal mark, sides and auricles yellow; 3-6, 

 a conspicuous dorsal line reaching along nearly whole of 3-4 

 shorter in 5, very faint in 6; also on each side a fairly large basal 

 spot joining the dorsal line above; 7, basal half yellow above and 

 also partly on sides, the yellow crossed on each side by a fine 

 black line, rest black; 8, a spot low down on each side; 9, a 

 smaller basal spot, low down on each side; 10, black. Ap- 

 pendages: snperio7' 1 4 mm., separate at bases, fairly straight, 

 slightly enlarged inwards near tips, and ending in a short point 

 -outwards; slightly hairy, pale yellow. Close up to the base is a 

 -curved black tubercle projecting downwards underneath, and not 

 easily distinguished as part of the appendage, Iiiferior very 

 short, thin, black, upcurved (see Plate xxiii., tigs.3-4). 



5. Very similar to male, but differing from it as follows. Wings 

 slightly larger; occiput with a tiny j^ellow central tubercle (see 

 Plate xxii., tig 8). antehumeral band of thorax broader and more 

 conspicuous. Abdomen broader and more cylindrical; markings 

 of 1-2 very large and conspicuous, leaving only a small portion 

 black on each side; basal spots of 3-4 very large, of 5-6 smaller; 

 7, basal half light 3^ellow, lower part of sides and underside shaded 

 with olive nearly throughout the segment; 8, a large .spot on each 

 side low down; 9, a pair of small basal lateral spots; 10, black. 

 Appendages wide apart at bases, 1 mm., straight, tapering slightly, 

 .not very pointed, subcylindrical, hairy, bright yellow, tips shaded 

 Avith brown. 



