140 



grey to light brownish grey, but with a blackish sheen down the 

 middle ; lower frontal callus shining black, almost quadrate, rather 

 transverse and almost always not quite touching the eyes, and almost 

 always not continued to an elongate narrow black upper frontal callus 

 which is not conspicuously elevated; vertex indistinctly darkened round the 

 ocellar space ; oceliigerous tubercle only slightly raised but distinctly shining 

 brownish red, ovate; pubescence on the frons abundant and black, normally 

 sloping forwards, and distinctly longer on and about the vertical space 

 but yellowish above the lower callus ; frontal triangle moderately broad, 

 separated by a conspicuous furrow from the cheeks and divided into 

 two lateral parts by a very fine though distinct longitudinal middle 

 furrow which extends from the lower frontal callus to the space between 

 the dusty orange antennal pits, with apparently a blackish ground 

 colour but obscured by a dense light grey or yellowish grey tomentum, 

 and without any pubescence. Face moderately elevated, light grey or 

 yellowish grey, but gradually paled below; cheeks moderate in size 

 and moderately puffed out below the eyes, bearing long yellowish grey 

 pubescence which grows conspicuously longer on the jowls, and which 

 is intermixed with blackish hairs on about the upper three-fourths, and 

 the greyish pubescence not extending so far as its extreme upper part ; 

 pubescence on the broad distinctly raised-up epistoma rather longer, 

 pale and sparse all over, intermixed with very rew long somewhat 

 bristly black hairs about the middle part or the upper side ; pubescence 

 on the lower part of the jowls and all about the mouth yellowish 

 white ; back of the eyes with a distinct equal narrow bare light grey 

 rim, and behind this rim lies a short brownish yellow ciliation which 

 becomes longer and rather less blackish on the upper half but which 

 does not merge into the longer black pubescence about the vertex. 

 Proboscis brownish black, thick, about two-thirds as long as the depth 

 of the head, with short yellowish pubescence behind the stalk and 

 with similar but rather longer and sparser one on the lower surface of 

 the large sucker-flaps. Palpi slightly shorter than the proboscis, and 



