406 
XYLEBORUS sp. prox. PERFORANS, Wollaston. 
Plate XXII, fig. 7. 
Reference :—Provisionally identified as Xyleborus sp. very near, if not 
identical with, X. perforans, Wollaston. Xyleborus 
perforans. Stebbing, Injur.Insects Ind. Forests, p. 65. 
Classification: Orders; COLEOPTERA. Family, Scolytide. sub- 
Family, Tomicini. 
Tree attacked: — Shorea robusta, Gertn. (Sal). 
Description. 
Beetle.—Elongate, cylindrical, Reddish. Head black, 
punctured with scattered projecting yellow spiny hairs; 
‘head entirely hidden by the hood-like thorax; antenne 
yellowish, elbowed ; funiculus 5-jointed, ending in.a pyramidal 
club, Thorax much longer than broad, constricted and rounded 
in front, the hind margin almost truncate; the surface in the 
posterior half slightly longitudinally ridged medianly, where it 
is smooth and finely punctured ; anteriorly set with small dense 
‘tuberculations and punctures, the tubercles merging into 
punctures on the sides posteriorly. Elytra cylindrical, rounded 
‘behind; finely striate with large rather scattered punctures 
and sparse spiny hairs; the elytra slope downwards posteriorly, 
‘the sloping portion set with sharp teeth and scattered, elongate, 
yellow, spiny hairs. Under-surface lightercoloured, punctate 
with sparse spiny yellow hairs. Legs reddishbrown; tibie 
straight, toothed on outer edges, Length ;nd to th inch, 
Plate XXII, fig. 8, shows this beetle. 
Life-History, 
This Scolytid is 2 dry wood-borer. It bores into the wood 
-of the Sal tree and lays its eggs there. It usually appears to 
tuanel straight into the wood; but at times, after reaching 
-a certain depth in the sap-wood the beetle turns and carries the 
gallery at right angles to its former direction. If the bark is 
-still on the log this gallery may go at times through the bark in 
this manner instead of in the sapwood. It is carried for 
