BY FREDERICK A. A. SKUSE. 27& 



margin, lateral ones commencing a little above middle of thorax ; 

 pleurae, pectus, and metanotum castaneous, the latter with an 

 ochreous or ochreous-brown median line ; scutellum dull ochreous- 

 brown, fringed with yellow hairs. Halteres sordid ochreous. 

 Abdomen not twice the length of thorax, umbrous-brown, superior 

 segments more or less tinged with castaneous, moderately clothed 

 with yellow hairs. Legs ochre-yellow, coxae and femora more or less 

 tinged with brown, all joints slightly tipped with brown at apex 

 and densely covered with a yellow pubescence. In fore legs tibia 

 longer (?) than metatarsus. Wings longer than entire body, 

 densely haired, hyaline, slightly tinted with brown in vicinity of 

 cross-veins, veins pale ochreous-yellow ; pubescence mostly pale 

 yellow, but somewhat sooty across wing at cross-veins, and again 

 less distinctly at apex of the wing. Costal vein extending beyond 

 tip of third longitudinal vein ^ the distance from that to tip of 

 fourth longitudinal vein ; auxiliary vein very indistinct towards 

 tip, scarcely reaching costa, terminating about mid-way between 

 origin of second longitudinal vein and tip of first longitudinal ; 

 first, second, and third longitudinal veins running parallel and at 

 equal distances apart; tip of second longitudinal rather more than 

 J the distance from tip ot first longitudinal to that of third longi- 

 tudinal ; marginal cross-vein joining first longitudinal very close 

 to tip ; middle and posterior cross- veins forming a very obtuse 

 angle ; fourth and fifth longitudinal veins very pale and indistinct 

 beyond cross-veins. 



Hah. — Lawson, Blue Mountains (Masters). January. 



Ohs. — The above is di^awn from a single specimen not in the 

 best condition, but the species is a well-marked one, and will, I 

 think, be recognised without difiiculty. 



Genus 8. Isoplastus, gen.nov. 



Antennae in ^ 2--i- 13-jointed, in 9 2--1- 10-jointed. Wings 

 pubescent. Marginal cross-vein and second longitudinal vein pale 

 and indistinct. Fork of fifth longitudinal vein with its base at 

 base of posterior cross-vein. 



