Platypodidze and Scolytidee. 35 
of the declivity is dead black, and has four rows of elevated 
vermiculate ridges from the vertex to the apex ; a few short 
hairs are scattered over the declivous surface. 
Length 2°75, breadth 1:2 mm. 
Hab. Mt. Matang, Borneo (Bryant). 
Tt is possible that this species may be the male of JW. 
18-spinatus, but there is not enough material for dissection 
at present. 
Genus HYLEDIUS, gen. nov. 
Oval, the head just visible from above and slightly elon- 
gate ; the antennal funiculus five-jointed, the first two, joints 
elongate, the rest transverse, the club elongate and sinuate 
on the inner edge, solid, with two oblique furcate septa; eyes 
bipartite, the insertion of the antennal scape being at the 
anterior edge of the lower portion of the eye; the mentum 
abruptly narrowed towards the base, the labial palpi and 
mentum both being furnished with long stiff hairs; the ligula 
long and narrow and inserted near the base of the mentum ; 
the maxilla with very large lacinial teeth, and long plumose 
hairs on the outer side of the palpifer. 
This genus is separated from Phlwosinus by the distinctly 
bipartite eyes and the elongate and curved club, ete., and it is 
suggested that P. eribratus, Bldf., should be placed in the 
same genus, although the club of the latter species is less 
elongate than in the type of Hyledius, 
Hyledius asper, sp. n. 
Oval, brownish yellow. Front concave, with a shiny 
central depression between the eyes and a median longitudinal 
carina from the mouth to the centre, the whole surface covered 
with piliferous punctures, and fringed all round with out- 
standing yellow hair. Prothorax broader than long, con- 
tracted apically, strongly punctured, with a median shiny line 
from base to apex, broadest and most shiny in the centre; the 
whole surface very finely pubescent; the base extended 
centrally and slightly sinuate. Scutellum small and trans- 
versely oval. ilytra half as long again and slightly broader 
than the prothorax at its base; sides subparallel to the centre 
and then curved to the rather blunt apex; the interstices 
convex, sinuate, and transversely rugose on the basal fourth, 
but becoming tuberculate before the middle, the tubercles 
ceasing at the declivity on the second and fourth interstices 
and a little lower down on the sixth; all the interstices are 
covered with irregular rows of small scale-like bristles, which 
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