220 



o MS yellowish white hairs ; lower frontal callus shining black or dark casta- 

 neous, convex, large, subquadrate with the upper half narrower aud with 

 the lower angles roundish but the upper margin irregularily notched, longer 

 than the width, separated from the eye-margins by the very narrow 

 linear intervals and from the upper callus by a broad one but in a 

 rather denuded specimen connected with a narrow line ; upper frontal 

 callus about a half as wide as and slightly longer than the lower callus 

 sharply pointed at the both ends and slightly curved outwards at the 

 sides, dull black, situated on about the middle of the frontal stripe ; 

 vertex somewhat greyer, without the ocelligerous tubercle, covered 

 with abundant short erect black pubescence which becomes slightly 

 longer and sparser behind as it hardly forms a outstanding tuft. Fron- 

 tal triangle densely covered with a greyish yellow or greyish orange 

 yellow tomentum, moderately raised and touching to the lower frontal 

 callus but there is a very fine though conspicuous transverse linear 

 sulcus between it and the latter, with a fine distinct median sulcus 

 throughout the whole depth, and with orange yellow or deep orange 

 yellow double lunules just above the antennal fossae. Face moderately 

 raised, pale yellowish grey ; epistoma as long as or slightly shorter 

 than wide, with rather narrow lateral pits, bare but bearing some short 

 conspicuous blackish pubescence on about the slightly darkened upper 

 lateral corners ; cheeks rather broad, more or less yellowish brown 

 tinged above and near the eye-margins, covered with numerous but 

 not dense short (but slightly longer than that on the epistoma) blackish 

 pubescence which becomes much sparser towards the inner margin of 

 its lower part ; jowls paler the cheeks, covered with abundant some what 

 dense, long, fine, soft, yellowish white pubescence which somewhat 

 extends up to the cheeks at where it becomes shorter, similar pubes- 

 cence on the lower mouth parts ; back of the head shallow on the 

 lower part but hollowed out above, yellowish grey or paler but greyish 

 yellow or pale brownish yellow above, covered with very sparse fine 

 yellowish white or pale yellowish grey pubescence ; postocular bare 



