819 



except on the seventh, and the sides pale yellowish or pale reddish 

 yellow ; pubescence on the disc short and depressed, black and yellow 

 but on the greyish spots and the posterior margin mostly yellow and 

 on the sides entirely whitish. Ventre covered with ashy grey tomentum, 

 with the rather conspicuous yellowish posterior margins except on the 

 seventh which bears numerous long curved black bristly hairs , pu- 

 bescence mostly whitish but on about the middle third through the 

 second to sixth segments black and a little longer. 

 Length : 14-18 mm. 



Male. Similar to the female but more brownish with the ab- 

 domen reddish brown on the basal segments. Head broader than the 

 thorax and abdomen, lirge. Frontal triangle not inflated but flat, 

 covered with pale yellowish grey tomentum, with the upper angle con- 

 spicuously brown-tinged and prolonged narrowly a very short distance 

 between the eyes, as in the preceding species, and with a fine median 

 sulcus which does not usually extend up to the upper top, and the 

 sides of the sulcus somewhat depressed about the middle ; face and 

 jowls very pale yellowish grey, clothed with dense but rather short 

 pale yellowish grey soft pubescence which is conspicuously longer on 

 the jowls, while it is bare on the epistoma which is quite sunken and 

 elongate-triangular, and cheeks consequently broad and inflated but not 

 strongly raised up from the eye-margins ; back of the head rather 

 shallow on the lower part where there are some short pale hairs which 

 come from on the jowls, but hollowed out behind the eyes on the 

 upper part, and with a minute blackish brown postocular ciliation which 

 becomes paler near the jowls and behind which there are some scat- 

 tered long whitish hairs all over the grey surface ; vertex oblong and 

 tubercular, brown, very slightly raised up from the eye-level or is in 

 the level, and bearing a few somewhat conspicuous dark brown pu- 

 bescence behind. Proboscis about half as long as the depth of the 

 head, narrower than that in the female, blackish brown, behind the 

 stalk bearing some comparatively long brown pubescence which becomes 



