250 ON SOMP] RARE AUSTRALIAN GOMPHINiE, 



outside of which the three ocelli are set, nearly in a line; the 

 black colour extends just on to the base of the front; rest of 

 ront 3'ellow, except a rather narrow straight black band crossing 

 the face just above the postclypeus; clyr)eus, lahrum, labium, and 

 ffence yellow, an indistinct black line in suture between clypeus 

 and labrum; mouth edged with dark brown. Thorax: pro- 

 thorax black, a yellow band along the collar in front, a tiny 

 double yellow spot behind, and on each side a small yellow spot. 

 Mesa- and metaihorax black above, the mesepisternum marked 

 with yellow as follows : no border-mark, a fine mid-dorsal line 

 about 1 mm. long, slightly forked behind; interalar ridge marked 

 with yellow; the half-collar mark oval, and just joined to the 

 dorsal stripe so as to form a " seven-mark," in which the tail 

 joins the head about its middle; antehumeral mark consisting of 

 a fine line just joined to a triangular spot near wing-joins; sides 

 bright yellow with an irregular black band along the first lateral 

 suture, and a narrow irregular black line along the second lateral 

 suture; E, black; spiracle carrying a black spot (see Plate xxii., 

 fig.5); notum black; scuta and scutella yellow; wing-joi7is black 

 with small yellow spots. Legs black, underside of profemora 

 yellowish-grey, coxee yellow. Abdomen: 1-2 swollen, 3 to middle 

 of 7 very slender, rest of 7-10 somewhat clubbed. Colour black; 

 1-2 with a clear yellow dorsal mark in the form of a cross; 

 auricles and most of sides yellow; genital appendages of 2 

 bordered with black; 3, a fine j^ellow dorsal line, reaching to 

 about 1 mm. from end of segment, a ^air of basal yellow spots 

 almost touching above; 4, a transverse yellow basal band and a 

 fine dorsal line about 3 mm. long; 5-6, a transverse yellow basal 

 band; 7, basal half j^ellow, crossed on each side by a fine black 

 line, rest black; 8, black, a rather large yellow mark low down 

 on each side; 9, black with a basal yellow spot on each side; 10, 

 black. Appendages: superior 14 mm., slightl}'' separated 

 at bases, divergent, cornute, slightly hairy, rather slender, very 

 sharply pointed, yellow with black tips; each carries underneath, 

 near its base, a hooked tubercle of fair size, colour yellow tipped 

 with dark brown. Inferior bifurcated, the two branches wide 



