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Rhynchophorous Coleoptera of Japan. 115 
and the wider space between the two inner rows of tubercles on the 
apex, which is distinctly punctured in the line of the two first 
strie. 
Xyleborus sobrinus, Kichh,. 
Hichh., Scol. Jap., p. 202; Rat. Tom., p. 363. 
Four specimens added from Chiuzenji. 
Somewhat variable in the sculpture of the elytra and 
the development of the elytral tubercles, which are usually 
much stronger than in any specimens of X. saveseni. 
The tubercles of the Ist interstice begin about the 
middle of the elytra, whereas in the single example of 
X. attenwatus they are confined to the declivity. 
A specimen from Hiogo in Colonel von Schoénfeldt’s 
collection is not separable from saweseni by any cha- 
racters. As it is quite possible that there may be two 
or three species allied to saweseni in Japan, I allow this 
and the preceding species to stand as a help for further 
investigations. 
Xyleborus adumbratus, sp. n. 
Fem. Oblonga, cylindrica, nitida, pilis erectis adspersa, nigra vel 
picea, prothorace nonnunquam rufescente, antennis pedibusque 
testaceis, his infuscatis; prothorace oblongiusculo, apice fortiter 
rotundato, in medio transverse elevato, postice sparse subtiliter 
punctulato ; elytris punctato-striatis, interstiis subrugosis, uniseri- 
atim subtiliter punctatis et pilosis, duobus primis a basi tuberculatis, 
apice declivi deplanato, sutura ad apicem solum callose elevata, 
interstitiis lo et 30 tuberculis acutis ornatis. Long. 3 mm, 
Hight examples taken at Nagasaki, Hitoyoshi, Oyama, 
and Subashiri. 
Closely allied to X. pfeili, Ratz., of which it is perhaps 
a mere geographical variety. 
Tt varies in colour from black to piceous brown, with the thorax 
sometimes lighier than the elytra. Head as in X. pfeili, with 
the front strongly punctured, with a more or less evident longi- 
tudinal carina. Prothorax as in X. pfeili, but with the hairs 
longer, and the central elevation more prominent and trans- 
verse ; its basal half very shining, diffusely punctured except 
behind elevation, where the punctures are closer. Elytra one half 
longer than prothorax, a little shorter and more conyex than in 
