428 Mr. W. F. H. Blandford on some 
shining towards the mouth, with scattered rather large punctures ; 
mouth infuscate, thinly fringed; eyes oblong, scarcely sinuate 
anteriorly. Prothorax ample, broader than long, strongly convex, 
the sides slightly, the apex more strongly rounded, the latter with 
two prominent median blackish tubercles ; surface before the trans- 
verse dorsal elevation with large transverse asperities, closer towards 
the middle, behind, punctured rather closely and distinctly at the 
sides, obsoletely over the middle, which is furnished before the 
scutellum with a dense tuft of short upstanding hairs, remaining 
pubescence scanty. Scutellum minute, rounded, infuscate. Elytra 
strongly declivous and retuse from before the middle to the apex, 
about a third longer than the prothorax, separately rounded and 
finely bordered at the base, the sides slightly tending to diverge 
behind, the apical borders seen from above abruptly inflexed, and 
forming an obtuse angle at the suture ; surface convex from the 
base to the declivity with indistinct rows of feeble punctures, the flat 
interstices with finer scattered irregular punctures ; declivity sub- 
abruptly rounded above into the cylindrical portion, margined at 
the sides and apex with an acute ridge, separated from the fundus 
by a slight gutter-like impression, fundus gently convex with sub- 
impressed rows of shallow punctures carrying long fine hairs, 
interstices flat with close fine piliferous points, their hairs short 
and semi-accumbent. Underside and legs testaceous, the tibiz 
closely and finely serrate. 
Hab. Invi, Chittagong Hills. 
This fine Yyleborus is most nearly allied to X. solidus, 
Eichh., among described species. From that Australian 
species it differs in its larger size and broader shape, in 
the greater prominence of the apical tubercles, the more 
evidently transverse asperities and finer punctuation of 
the middle posterior portion of the prothorax, in the very 
scanty punctuation of the basal portion of the elytra, and 
in the very acute marginal carina and the flat non-tuber- 
culate interstices of the declivity. 
It is possible that the examples are not quite mature, 
and that the colour may be sometimes blackish. It is 
always difficult to determine whether light-coloured 
Scolytids are immature or not. 
Ayleborus mancus, sp. 0. 
Q@. Cylindrica, castanea, elytris apice picescentibus, breviter 
pilosa; prothorace antice fortiter rotundato, lateribus postice vix 
