65 Mr. Walter F. H. Blandford on the 
stout, with transverse sutures. Prothorax very transverse, 
narrowed from base to apex, with sides rounded, base strongly 
produced in middle, surface asperately punctured, with short 
bristles, closer at sides, with au indistinct smooth central line, 
and an oblique impression on either side before and parallel to 
base ; sides muricate towards apex. Scutellum rounded, rugose. 
Elytra wider than prothorax and two and a half times longer, 
widest in middle, base of each strongly rounded and crenate ; sides 
slightly rounded to middle, gradually more strongly towards apex, 
which is obtuse; surface obliquely and not strongly declivous 
to apex, with deep rather wide strix, obsoletely punctured to 
middle, thence smooth, interstices coarsely tuberculate at base, the 
tubercles becoming finer, and being replaced behind the middle 
by short fuscous scales, which give the elytra a brownish tinge ; 
the two outer interstices and lateral margin with a close covering 
of short bristles. Underneath coarsely punctured, shortly hairy ; 
abdomen more convex longitudinally than elytra, first two seg- 
ments much longer than last three, fourth and fifth bristly. Spines 
of anterior tibiz nearly obsolete. 
Hylesinus tristis, sp. n. 
Oblongo-ovalis, obscurus, niger, antennis tarsisque ferrugineis ; 
prothorace transverso, basi brevius producta, lateribus rotundatis, 
versus apicem muricatis, supra asperate punctato, utrinque ante 
basim impresso; elytris prothorace sesqui amplius longioribus, 
lateribus ad medium subrectis, postice rotundatis, apice subtiliter 
emarginato, striatis, striis ad basim modo obsolete punctatis, inter- 
stitiis transverse asperatis, postice squamulis cinereis inconspicuis 
vestitis, margine lateraliin versura solum distincte setoso. Long. 
3—3°5 mm. ; lat. 1:5—1°9 mm. 
Mas. Fronte impressa, interstitiis post medium seriatim 
tuberculatis. 
Several specimens taken at Ichiuchi, May Ist, 188], 
and a few at Junsai. 
Similar in sculpture and appearance to H. luticollis, but smaller, 
more oblong-oval, less strongly convex, the elytra more declivous 
behind, as convex as ventral surface. Front in male broadly im- 
pressed between eyes with a short central carina, pubescent ; in 
female, narrowly impressed over mouth, flat between eyes, with 
pubescence thin. Prothorax less transverse than in H. laticollis, 
with sides less narrowed to apex, and base less strongly produced 
in middle, its sculpture similar. Elytra narrower, subparallel to 
middle, less obtuse at apex, interstices less coarsely tuberculate at 
base, alternate interstices behind middle with an indistinct row 
