XXI. CRABRO. 143 
it is presumed he would have done had his presented that 
peculiar character which in other instances he has indi- 
cated. But I fear there is considerable confusion in the 
synonymy ; although it is not impossible that the several 
species should exist, yet I strongly suspect mine to be 
Van der Linden’s insect, which however would not dis- 
pense with my name, as the latter author has applied wrong 
synonymes ; and as it is proved to be evidently distinct 
from St. Fargeau’s Cr. chrysostomus by the essential cha- 
racter of the stemmata. I have named it in allusion to 
its habits; it is exceedingly common in the summer 
months, especially where willows abound, into the wood 
of which it bores its cylindrical cells. 
Sp.10. Linpentus. N. Sp. 
niger, flavo-maculatus, stemmatibus in lineam curvam positis, 
metathoracis basi longitudinaliter striato. 
$ antennis simplicibus. 
length 54—8 lines. 
9 ?Crabro cephalotes. Panz. F. 9. 62. 16. 
$ ?Ceratocolus striatus. St. Farg. 3. 745. 4. 
Head black, pubescent, subquadrate, the whole superior sur- 
face densely punctured ; the stemmata placed in a curve in the 
centre of the vertex, the anterior portion of which is concave, 
a longitudinal central impressed line extending from the oc- 
ciput to the anterior stemma, whence it proceeds forwards to the 
verge of the vertex, where it expands into a broad canalicula, 
occupying the whole face, and reaching the base of the an- 
tennze, which are black, with their scape entirely yellow; the 
inner orbits of the eyes and clypeus densely clothed with a 
silvery down, the latter carinated in its centre ; the mandibles 
yellow, with their apex piceous. 
The thorax black, pubescent; the dorsolum having a central 
longitudinal carina extending to its middle, and an abbreviated 
scratch on each side, its anterior half delicately transversely 
