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on the vertex ; frontal callus brownish black shining, comparatively 

 convex, oblong and slender, quite separated from the eye-margin by 

 the rather broad (still narrow) intervals, with a very long and linear 

 though conspicuously broad extension which is also raised and extends 

 near the vertex, and this extension usually being sharply pointed above 

 and about three times as long as the callus proper ; vertex without 

 tubercle and ocelli, covered with somewhat numerous erect curved black 

 pubescence which grows up a little longer behind ; frontal triangle 

 about half as long as it is broad, clothed with yellowish brown tomen- 

 tum, the middle part niore or less conspicuously elevated roundish and 

 with a fine sulcus which extends from the upper extremity to below 

 the antennae. Face moderately convex, covered with greyish yellow 

 tomentum which becomes brownish on the upper part of the cheeks 

 especially along the eye-margins ; epistoma apparently broader than 

 the length, with two deep and narrow lateral pits, on the upper 

 lateral corners and about the middle there are some short con- 

 spicuous black hairs of which those on the middle part are much fewer 

 and much shorter ; cheeks covered with a few short scattered incon- 

 spicous black pubescence which is more conspicuous near the eye-margin 

 and about the upper part, and this black one extends a little below to 

 the jowls covered with numerous dense long yellowish hairs which ex- 

 tend up a little to the back of the head ; postocular margin with a 

 narrow greyish -yellow bare rim which becomes narrower towards the 

 upper angle and broader into the jowls, and behind which is a rather 

 long (still short) and somewhat overlapping ciliation of bristly black 

 hairs which extend a little behind to the hollowed-out portion of the 

 greyish yellow back of the head on where there are some scattered pale 

 hairs and below into the jowls. Proboscis rather long and stout, 

 shorter than the depth of the head, brownish black, the hind margin 

 of the stalk furnished with some moderately long erect blackish pubes- 

 cence which becomes conspicuously dense at its apex ; sucker-flaps short 

 and stout, about a half as long as the proboscis, covered with some 



