BY FREDERICK A. A. SKUSE. 109 



Head fulvous, pruinose with greyish, tinged with blackish 

 between the eyes ; anterior portion of front, the rostrum and 

 joints of scapus fulvous (more brownish in the ^ specimen before 

 me) ; rostrum rather more than half the length of the head ; 

 antennpe a little longer than the head ■. flagellar joints as in L. 

 scutellaris. Collare brown, somewhat tinged with reddish-fulvous. 

 Thorax fulvous (somewhat obscured by a greyish bloom), with 

 three confluent deep brown or black, somewhat shining, stripes ; 

 intermediate stripe broad, extending from anterior margin | the 

 distance to suture ; lateral ones narrower, extending from below 

 humeri to origin of the wings ; pectus brown covered with a 

 greyish bloom ; metanotum with a brown band posteriorly. 

 Halteres fulvous with brown club. Abdomen : first segment 

 fulvous, with a brown spot posteriorly ; second shining fulvous? 

 the posterior half black, with a large greyish hoaiy spot on each 

 side ; the remaining segments black, greyish hoary laterally ; geni- 

 talia in both sexes slightly tinged with fulvous ; venter similarly 

 coloured to upper side. Legs dark brown or black, the coxae 

 somewhat tinged with fulvous. The tarsi (in 5) in the fore and 

 intermediate legs less than twice the length of tibise, twice 

 their length in the hind pair. "Wings blackish-brown at the origin, 

 with a very pale brownish tint, exhibiting whitish reflections on 

 the anterior half, the costal cell and stigma distinctly brown; 

 veins dark brown, the costa and first longitudinal almost black. 



Hah. — King George's Sound, West Australia (Masters). Two 

 specimens. 



Ohs. — -Difiers from the rest in having three stripes on the thorax, 

 and the third to last abdominal segments brown or black, &c. In 

 the only ^ specimen before me the antennae and legs are lost. 



b. Genitalia protruding in both sexes ; ^ forceps of rather 

 simple structure. 



Genus 12. Acracantha, gen.nov. 



First longitudinal vein joining anterior branch of second longi- 

 tudinal near the base; praefurca distinctly longer than great 



