108 Mr. Walter F. H. Blandford on the 
tuberculate elevation. Antenne testaceous. Prothorax transverse, 
not narrowed towards apex; base truncate, posterior angles rounded, 
sides and apex rounded, the former very feebly, the latter more 
strongly, with margin crenate ; surface with an obtuse transverse 
elevation in middle, rather finely asperate anteriorly, posteriorly 
with distinct scattered punctuation. Scutellum triangular, shining. 
Elytra rather less than twice as long as prothorax, and as wide at 
base, which is truncate, with the humeral angles nearly rectangular, 
sides straight but divergent to apex, which is circularly rounded 
and narrowly emarginate at suture ; surface at base cylindrical and 
longitudinally convex, striato-punctate, interstices flat, with a single 
row of very fine punctures, apical declivity sharply marked, very 
oblique, beginning before middle of elytra, dull and clothed with 
cinereous scales, subconvex, impressed along inferior margin which 
is acute, striate, the interstices flat. Underside testaceous, thinly 
pubescent. Legs testaceous, the anterior tibie obliquely truncate 
and uncinate at apex, middle and posterior tibiz rounded. 
This species corresponds closely to Hichhoff’s de- 
scription of X. sordicauda, Motsch., from which it differs 
in no important respect except in size. X. sordicauda is 
said to be twice as large as X. semi-opacus, Hichh., 
whereas this specimen is rather smaller. 
Minor points of difference from the description of 
X. sordicauda are found in the prothorax, which is not 
contracted anteriorly, and in the elytra being dilated 
posteriorly, with the apical margin more strongly rounded. 
I conclude that it is distinct, and that we have an instance 
of what is common in the genus, a well-marked form 
represented by more than one species. It may easily be 
separated from X. semi-opacus by the punctured striz 
of the elytra. 
Xyleborus validus, Hichh. 
Kichh., Scol. Jap., p. 202; Rat. Tom., p. 358. 
Taken in greater numbers than any other species; 
extending from Sapporo and Junsai in Yezo, to 
Nagasaki and Oyayama in Kiushiu, also at Nikko, 
Miyanoshita, etc. As there is a closely allied and hardly 
distinguishable species from Ceylon, it represents an 
Oriental rather than a Palearctic; type. It is found 
in firs. 
