68 PROCEEDINGS OF THE ROYAL SOCIETY OF QUEENSLAND. 



inner very weak. Four posterior dorsocentrals, first short, 

 second a little longer, third much longer, fourth extending 

 well beyond scutellum. Scutellar apical present. Three 

 (at times five) stemopleurals. Ventral side of thorax silvery, 

 sometimes tinged strongly with gold. Clothed with short 

 black bristles, but not thickly. 



Legs black, tinged with grey. Second and third coxse 

 tinged with silver and pink. Coxae strongly armed with 

 recUnate bristles. Proximal end of first femur mth a small 

 number of rather short hairs ; second femur provided on its 

 lower proximal half ^^'ith a beard-like growth of very long 

 hairs, while extending from the hairs to the top of the femur 

 on its posterior part is a row of short stout bristles, about ten 

 in number, forming a '• comb." Tarsi not shorter than tibiae ; 

 pulvilli large, black, fringed with minute white hairs. 



Abdomen black and silvery, clothed above with short 

 recUnate bristles, beneath with longer hairs. Second segment 

 without marginals ; third with two ; complete row on fourth. 



Hypopygium black, not very prominent. Forceps black. 

 Hypopygium and upper part of forceps provided with long 

 curh" hairs, wliicli gradually shorten on the forceps ; the tip 

 of the latter bare. Prongs of forceps connected for varying 

 distances by membrane. Copulatorj^ organs of tuberosa type. 

 Claspers dark brown. Accessory plates almost black, hairy. 

 First joint of penis black, hea\aly chitinised ; second joint 

 somewhat triangular, the posterior end produced into a short 

 sharp point, and bearing two large forwardly projecting prongs 

 shghth^ bifurcated anteriorly ; the whole dark brown, except 

 in the most heavily chitinised parts, which are black. Between 

 the anteriorly projecting chitinous pieces is a pair of pale- 

 yellow serrated chitinous processes. The anterior portion of 

 the penis is whitish. 



Female. — The female is usually a little larger than the 

 male, especialh", of course, in the abdominal region. 



Front about one-third the width of head. Frontal bristles 

 in two rows ; one beside the eye, consisting of four bristles ; 

 the other situated along the frontal stripe and composed of 

 ten bristles. Scutellar apicals absent. Anterior femur slightly 

 hairy, others not so ; the ventral row of bristles of the second 

 femur complete, i.e. no " comb" is differentiated. Third coxa 

 bears a shct apical bristle. 



