530 Annals of the South African Museum. 



distinguished in the female by the frontal callus, which does not reach 

 the eyes. Length 13 mm. males, 12 mm. female. 



Male. Face with grey tomentum and thick yellow hairs. Beard 

 same colour. Palpi dark brown with brown hairs. Proboscis long, 

 nearly a third of the length of insect. Antennae dark brown, the first two 

 joints with dark hairs. Eyes hairy, the upper facets only a little larger 

 than the lower ones. Thorax black, rather shining, with two distinct 

 narrow grey stripes, one on each side ; dorsum with some scattered 

 white hairs, sides with thick yellow hairs, a few brown ones intermixed. 

 Scutellum black, with some white hairs. Abdomen blackish with three 

 very distinct grey tomentose spots on each segment, except the first 

 and the last one; pubescence on dorsum slight, consisting of some 

 white and dark hairs ; sides with thick yellow and brown hairs. The 

 extreme side borders of segments are fulvous ; underside black with 

 grey tomentum ; in the other male the grey spots are almost effaced. 

 Legs dull reddish, the femora darker, the legs with rather thick black 

 pubescence. \Vinys clear, with dark brown stigma and veins, the 

 transverse veins clouded. 



Female. Palpi small, yellowish, with long black hairs, the hairs on 

 face not so thick and brown in colour. Forehead very wide, narrower 



/ 



at vertex ; the width in front is nearly equal to the length. Frontal 

 callus is very large, blackish brown, shining, but it does not reach the 

 eyes and does not extend much beyond the middle of forehead. The 

 hairs at sides of thorax are largely brown. Abdomen with the spots 

 not so distinct, appearing more yellow in colour with some yellow 

 hairs, pubescence elsewhere blackish. L> (/> paler in colour, the femora 

 the same as the tibiae in colour. The proboscis in female appears to 

 be broken off ; in the other male it does not appear long, being 

 apparently retracted. 



INDEX. 



PAGE 



callosus (Silvius) . 52'J 



direef a (Metoponaplos) . 527 



hirsutus (Silvius) . 529 



METOPONAPLOS 527 



PAGE 



nigricans (Metoponaplos) . . 528 

 parva (Metoponaplos) . 527 



SILVIUS 529 



