118 Mr. Walter F. H. Blandford on the 
long again, separately, but slightly rounded at base, humeral 
angles rectangular, shoulders scarcely prominent, sides parallel 
to behind middle, thence gently rounded, apices nearly truncate, 
or separately rounded with slight median emargination ; surface 
shining, finely punctured in rows, interstices with a single row of 
punctures, as strong but not so frequent as those of stria, and 
with a series of fine hairs which are longer posteriorly ; behind 
convex, strongly and nearly vertically declivous, deeply impressed 
along suture for posterior third of elytra, the depression smooth, 
shining, with elevated callose sides, bearing four or five tubercles 
on the third, and finer ones on the succeeding interstices, first and 
second interstices with two or three fine tubercles before apical 
impression. Underside testaceous-brown, punctured at sides and 
very scantily pubescent. Legs testaceous with knees infuscate. 
Male similar in sculpture to female, but smaller and more slender. 
The impression of the elytral apex is much deeper 
than in X. confusus, Hichh., and resembles that of 
certain Pityophthort. 
Xyleborus defensus, sp. n. 
Fem. Elongata, cylindrica, ferrugineo-brunnea, breviter pilosa; 
prothorace oblongo, apice rotundato, supra leniter gibboso, postice 
distincte sparsim punctato; elytris lineato-punctatis, interstitiis 
uniseriatim punctatis, apice subcirculatim excavato retuso, infra 
emarginato, in retusionis margine dentibus duobus acutis utrinque 
armato. Long. 3 mm. 
One specimen, Sapporo. 
Similar to the last species, but with the following 
distinctive features : 
Body stouter and more convex ; prothorax slightly narrowed 
towards the apex and not regularly rounded, median elevation 
evident, though small, punctuation of the basal half stronger 
and rather irregular. Punctures of the elytra stronger and less 
numerous, interstices somewhat rugose ; apex widely impressed, 
with the elevated callose margin subcircular, but not reaching 
the suture below, so that the lower border has a shallow 
emargination, impressed surface shining and impunctate; there 
are, on each side, two minute tubercles before it close to the 
suture, and two spines just within the lateral margin, one near 
the upper extremity, the other about the middle. Antenne, legs 
and underside ferruginous. 
