165 



callus and furrow just below the antennae, passing the space between 

 the antennae. Face whitish yellow, in profile moderately concex ; 

 side-cheeks sometimes deep yellow, narrower than the half of the 

 epistoma which is about as long as broad ; pubescence on the cheeks, 

 jowls and epistoma pale yellow but sometimes brownish yellow or 

 orange, suberect but on the latter rather depressed, and the pubescence 

 always becomes longer on the jowls and about the mouth-edge ; back 

 of the head hollowed out leaving a very narrow rim behind the eyes 

 on which is a very short dense orange yellow postocular fringe, and 

 this fringe is almost as short on the upper part as on the lower ; back of 

 the vertex with several short though longer than the postocular fringe 

 yellowish brown hairs. Proboscis dark brown, very much shorter 



than the depth of the head, with ratjier few yellowish pubescence 

 beneath the stalk, and with somewhat conspicuous longer whitish hairs 

 on the lower surface of the sucker-flaps ; palpi about as long as the 

 three-fourth of the length of proboscis, pale yellow; first joint globular, 

 furnished with long yellow hairs as those on the jowls, with a very 

 few black hairs intermixed on the upper part ; second joint long and 

 hanging straight downwards, peg-shaped, thickened on the basal three- 

 fifths but afterwards diminishing to a thin conical point, covered with 

 numerous though not dense short black adpressed bristles with some 

 shorter glistening golden ones intermixed except about the tip, while 

 some longer thin golden hairs occur about the basal half of the under- 

 side. Antennae orange with two paler basal joints ; first joint covered 

 with a rather sparse somewhat long pale yellow pubescence, and with 

 short black dorsal bristles ; second joint very short, shorter than the 

 half of the length of the first joint, with a very few short black apical 

 bristles especially on the innerside ; third joint slightly shorter than 

 three times of the two basal joints together, usually deep reddish 

 yellow, the basal annulation about as long as twice the following 

 annulations together, with the dorsal hump obvious and occuring much 

 near the base than the middle and with (or sometimes without) some minute 



