Polydrusus. | RHYNCHOPHORA. 20) 
P. tereticollis, De G. (undatus, F.). Elongate, black, rather 
densely clothed with ashy scales, which are somewhat silvery at the 
sides and apex of elytra, which have the surface furnished with three 
waved fascie, which are sometimes deep brown, sometimes lighter, and 
sometimes obsolete or absent, so that the whole upper surface appears 
unicolorous ; rostrum about as long as head; thorax narrow, subcylin- 
drical, with the sides scareely rounded ; elytra much broader than 
thorax, convex behind, with fine, but distinct punctured striz; an- 
tenn and legs red. L. 4-5 mm, 
Male with the anterior tibie strongly curved internally and the fifth 
ventral segment slightly impressed before posterior margin. 
On young oaks and other trees and bushes; generally distributed and, as a rule, 
common throughout England and Scotland ; I know of no record from Ireland, but 
it probably occurs. 
P. pterygomalis, Poh. (pterygomaticus, Boh. sec Bedel ; flavipes, 
Marsh nec De G.), Oblong, subcylindrieal, black, thickly covered with 
very bright more or less shining golden green scales, and shining pale 
raised hairs, antennz and legs yellow or yellowish red; head rather 
large, scarcely narrower than thorax, with eyes prominent, and with 
the temples plainly raised just behind eyes into a prominence ; thorax 
transverse, with the sides rounded, slightly constricted at base and 
apex; elytra with fine punctured strive ; femora without teeth; in the 
male the scales are more shining than in the female. L. 4—5 mm. 
On young oak, hazel, beech, &c., in woods; generally distributed and not un- 
common throughout England and the greater part of Scotland; Ireland, Dublin, 
Waterford, Belfast, and probably common. 
P. flavipes, De G. (nec Marsh). Extremely like the preceding 
species, but easily distinguished by the absence of prominences behind 
eyes, the duller scales of the upper surface, and the fact that the raised 
hairs intermixed with the scales are fuscous and not pale ; the abdomen 
is much more thickly squamose ; the thorax is, moreover, less rounded 
at the sides, and less distinctly transverse ; the scrobes do not attain 
the anterior margin of the eyes, whereas in P. pterygomalis they just 
reach beyond it, although not so prolonged as in P. tereticollis; this at 
least is my experience, although it must be allowed that Bedel states 
that in both P. flavipes and P. pterygumalis the scrobes are obliterated 
at the apex of the eyes. L. 4-5 mm. 
On young trees in woods, &. ; also by sweeping ; rare; Hammersmith (formerly), 
Lee, Loughton, Bearsted, near Maidstone, Windsor Forest; Hainault Forest ; 
Hythe ; Holm Bush, Brighton ; New Forest ; Buddon Wood, Leicestershire ; Lang- 
worth Wood, Lincoln (where I have found it sparingly and might probably have 
taken a number of specimens, but I passed it over as the preceding species) ; it has 
been recorded by Me Nab from Glasnevin Gardens, Dublin. 
P. planifrons, Gyll. (argentatus, Ol.). Oblong, black, densely 
clothed throughout (except the tarsi and antenne), with rich green 
