480 



Female. Head comparatively large, about a half as long as the 

 thorax but broader, moderately arched behind. Frontal stripe yellowish 

 brown, narrow, gradually contracting from the vertex to the lower end, 

 and about six times as long as its broadest part or wholly ten times 

 as long as its narrowest part, covered with numerous but not very- 

 dense short black pubescence which becomes slightly sparser below; 

 frontal callus shining black, cylindrical, about three times as long as it 

 is broad, with the very narrow shining black extension which is wholly 

 two and a half times as long as the callus proper and extends to the 

 upper end of the lower two-thirds of the frontal strips, the callus proper 

 well separated from the eye-margin by the comparatively broad linear 

 intervals; vertex slightly more greyish than the forehead, covered with 

 much abundant similar black pubescence, behind which is some longer 

 stouter black outstanding hairs. Frontal triangle yellowish brown 

 tomentose, but slightly paler at the lower lateral corners, moderately 

 convex, with a fine but distinct median sulcus throughout, and with 

 the somewhat paler double lunules just above the antennal fossae. Face 

 moderately raised from the eye-margins, covered with a whitish 

 tomentum but the upper corners of the cheeks conspicuous!}' dusted 

 with yellow, the colour slightly extending below along the eye-margins ; 

 epistoma about as long as wide, bearing ' some short silvery white 

 pubescence on about the lower half or more, intermixed with very few 

 sparse stout rather conspicuous black hairs, some similar but longer 

 (though less inconspicuous) black hairs on about the upper lateral 

 corners; lateral pits rather narrow and long, not very deep; cheeks at 

 the lower part about a half as Wide as the epistoma, covered with 

 numerous dense short (but slightly longer than that on the middle 

 part of the epistoma) black pubescence which becomes sparser near the 

 epistoma and at the lower part where are numerous longer though 

 fine silvery white soft hairs which extend on the jowls and grow longer 

 and shaggy there; back of the head covered with a white dust and 

 -rather sparser silvery white soft pubescence, shallow on the lower part 



