Cosso7iidcB of Japan, 13 
Pentarthrides of the Cossonidce ; whilst its fully developed 
eyes, and medially inserted antennie, in conjunction with 
its just a])preciable scutellum and elongate metasternum, 
will tend still further to retain it in the immediate vicinity 
of Pentarthrum proper. 
2. Pentacoptus gronopiformis , n. sp, 
P. breviter parallelo-oblongus, piceo-niger, opacus, squa- 
mis flisco-cinereis lutosis plus minus obtectus ; capite pro- 
thoraceque proflmde et dense punctatis, rostro (brevi, 
parallelo, latiusculo, depresso) grosse longitudinaliter stri- 
goso, oculis parvis sed valde prominentibus, hoc elongato- 
subquadrato, mox pone apicem profunde transversim con- 
stricto ; elytris parallelis, prothorace latioribus, grosse et 
confertim punctato-sulcatis, interstitiis alte costato-elevatis ; 
antennis pedibusque (pr^esertim illis) brevibus, rufescen- 
tioribus, illarum capitulo parvo. Subtus profunde et 
grosse punctatus. 
Long. Corp. lin. 1^. 
Captus in trunco quodam antiquo Camellia japonicce 
ad Nagasaki, in ins. Kushiu, mense Augusto, a.d. 1865. 
Apart from the features (some of them generic ones) 
above alluded to, the excessive shortness of the limbs of 
this coarsely sculptured and somewhat G^ro7zo/?5-shaped 
little Cossonid, added to the fact that its elongate-squarish 
prothorax (which is deeply constricted just behind the 
front margin) is appreciably narrower than the elytra, 
whilst its longitudinally strigulose rostrum is short and 
broad, but nevertheless linear and comparatively depressed, 
will all combine to give it a character which, when once 
seen, it is impossible to mistake. It appears to have been 
taken by Mr. Lewis at Nagasaki, in the island of Kushiu, 
— " out of an old Camellia tree in the garden of the 
British Consulate." 
Genus 3. Pentarthrum. 
Wollaston, Ann. Nat. Hist. xiv. 129 (1854). 
Corpus lineari-cylindricum, angustum, sculpturatum, 
calvum : rostro lineari, vel (ut in P. angustissimo) sub- 
gracili, vel crassiore ; oculis rotundatis, prominentibus ; 
scrobe brevi, leviter decurva, infra oculum vix currente : 
prothorace vel (ut in specie nostra) ovali, vel (ut in P. 
Huttoni) ovato, vel (ut in P. cylindrico^ ovato-cylindrico. 
