VIII STAVROS DISTINCT US 211 
and the yellow on the 3rd segment is paler, soon fading 
to white. In fact, the coloration is very like that of Ps. 
barbutellus. 
Head black, with some yellow hairs on top. Thorax 
black, with a yellow band in front and some yellow hairs, 
generally sufficient to form a narrow band, behind. 
Abdomen black; with the rst segment yellow; 3rd 
segment light yellow, soon fading to white, but black in 
the middle and at the base ; 4th and 5th segments and 
sides of the 6th segment white. A variety occurs in which 
the 4th and 5th segments and sides of the 6th segment are 
yellow. 
Coat longer, much less even and somewhat denser than in 
saps: vesla é is 

vestalis —these differences combined are very noticeable. 
The coat is somewhat shorter, somewhat denser, and some- 
what finer than in darbutellus. Hairs on the legs longer 
than in vestalts. 
Hind metatarsi slightly shorter than in vestalzs. 
The best characters for distinguishing azstznctus from 
vestalts lie in the male antenne. These are much shorter 
than in vesta/7zs—tlength of flagellum 5 mm.—and have the 
3rd joint about as long as the 5th, the 5th being much shorter 
than the 3rd and 4th together. 
Armature like that of vesta/zs; but there are slight 
differences in the relative dimensions of the parts, and the 
inner margins of the forceps are less hairy, especially 
towards the base. 
I took Ps. distinctus plentifully at Colinton, near 
