474 



Anvals of the South African Museum. 



FIG. 1. ? . 



PLAGIOCOMA CKASSISETA, n. sp. 



A robust species. Head with red background, covered with a 

 whitish indumentum, frontal band rusty red ; froiis projecting and as 

 broad as the diameter of the eye ; orbits, genae and peristome broad. 

 Owing to the narrowing of the hind part of the frons the vertex is 

 only the width of one eye. Antennae black, moderately long, the apex 

 rounded at its anterior angle ; chaeta also black, thickened to the end, 

 the second joint short. Proboscis little elongate, as usual ; its second 

 segment a little longer than the first, deflexed, black, labella also 

 black. Palps very short, thickened, bearing very small black hairs. 

 The frontal setae include inner crossed vertical setae, and less long 

 inner ones, 1 prevertical seta turned outwards, and 1 pair of developed 

 ocellary setae ; 3 frontal setae set in an arcuate row below the inser- 



