40 î>. CAMERON, ON SOME AUSTRALIAN ANtì 



but not closely striated ; there is no transverse furrow on 

 the 3'*^ segment ; and no distinct, oblique ones on it and on 

 the 2"'^'. Median segment densely covered with black hair. Legs 

 densely covered with short black hair. 



Chaolta tiihercrdatn sp. nov. 



Luteous, the antennae and a broad, obliquely curved mark 

 across the ocelli extending to the eyes, black ; the abdomen 

 darker coloured than the thorax ; wings yellowish hyaline to 

 the transverse median nervure below and above close to the 

 transverse basal ; the rest dark fuscous tinged with violaceous, 

 the stigma black, narrowly luteous at the base. o. 



Length 9 ; terebra 7 — 8 mm. 



Barabei — Z. 0. afd. Borneo (Pool leg.). 



Facial plate short, broad, its apex broadly rounded, the 

 centre roundly convex, without a keel in the centre ; the 

 antennal keel stout, reaching to its base. Temples broad, as 

 long as the eyes ; apex of mandibles broadly black. Apical half 

 of centre of metanotum finely longitudinally sti-iated. Abdomen 

 broad, ovate, hardly as long as the head and thorax united ; 

 the central part of P*^ abdominal segment broad, not clearly 

 separated, strongly longitudinally striated, the striae irregular 

 and stronger towards the apex, the 2'"^ and following segments 

 striated, the strias becoming weaker towards the apex ; the 

 ])late on 2"'^^ segment is irregular, reaches to shortly beyond 

 the middle ; it is formed of 2 stout outer keels which almost 

 meet at the apex and of 3, stout, irregular striae ; the lateral 

 furrows broad, curved, shallow, the transverse furrows wide, 

 indistinctly striated in the middle. 



The temples are not obliquely sloped and not broadly 

 roundly narrowed as in the allied sjieeies e. g. as in C. maoi- 

 lifroiis and ('. sulcata ('am. from which it may be further 

 known b} the indistinct facial plate. 



