XXI. CRABRO. 139 
their tibize yellow in front, somewhat ferruginous beneath, and 
black behind; the posterior femora entirely black, with some- 
times a slight yellow streak above; their tibie yellow above 
and in front, ferruginous behind, and with a black litura; the 
anterior and intermediate tarsi flavo-rufescent, their apical joint 
piceous, and the first joint of the intermediate pair produced 
on the outside towards the apex, and its margin armed with 
robust spines. 
The abdomen elongate, black, with six yellow bands vari- 
ously interrupted ; the second generally the widest, and the fifth 
almost always entire 4. 
I am unacquainted with the ¢. 
$ in my own Collection, 
+4+ This I consider to be most probably an accidental 
variety of the ¢ of the preceding, notwithstanding the 
differently coloured pubescence of the clypeus; and if it 
should prove so, the synonymy must stand as Van der 
Linden has given it. My specimens differ from St. Far- 
geau’s merely in the mandibles wanting the yellow spot, 
the tubercles being black, and the tibize being slightly 
stained behind, all of which are variable characters, as is 
sufficiently evinced in the series I have of the preceding 
species. It appears to be rare; I have hitherto taken only 
two specimens, and those near Hampstead. 
Sp. 9. xyzturcus. N. Sp, 
niger, flavo-maculatus, clypeo aurato ( ¢ argentato), metathorace 
rugoso, stemmatibus in lineam curvam positis. 
4 antennarum articulo tertio ad seatum subtis emarginatis. 
length 33—5$ lines. 
?Crabro fossorius. V.d. Lind. pt. 2.51.10. (The description without 
the synonymes. ) 
Head black, large, subquadrate, minutely and densely punc- 
