388 PERCY SLADEN TRUST EXPEDITION 
18. Xyleborus bucco Schauf., Tijdschr. Ent., xl. 1897, p. 212; Kolbe, Mitt. Zool. 
Mus. Berlin, v. 1910, p. 41. 
Not obtained by the Percy Sladen Trust Expedition. 
Loc. Seychelles: La Digue, 1892 (Alluaud). 
[ Xyleborus affinis Eichh., Berlin. Ent. Zeitschr., xi. 1867, p. 401; Kolbe, Mitt. Zool. 
Mus. Berlin, v. 1910, p. 41. 
This species is stated by Kolbe (/.c.) to have been taken by Brauer in Mahé. It was 
not obtained by the Perey Sladen Trust Expedition. It has been referred to under 
Xyleborus perforans. | 
19. Xyleborus abruptus, sp. n. 
Cylindricus, subnitidus, fusco-testaceus ; prothorace subgloboso, margine antico sub- 
crenato, dorso medio valde transverse elevato, postice punctato et in margine basali medio 
densius pubescente ; elytris quam prothorace paululum longioribus, indistincte lineato- 
punctatis, interstitiis confuse punctatis, apice oblique truncato-retuso, margine per totum 
acuto, subcirculari, fundo utrinque ad suturam gradatim elevato et medio impresso, nitido, 
interstitiis perspicue irregulariter punctatis. 
Long. 3°5 mm. 
Head convex, coarsely roughened between the eyes, the rest of the front finely 
shagreened ; the eyes are placed near together and are large, emarginate, with coarse 
facets, there is a transverse row of pale hairs over the mouth and a faint short longi- 
tudinal line in the centre just above; the prothorax is large and globose, with the 
posterior angles obtuse and the sides rounded, anteriorly asperate and pubescent, slightly 
depressed behind the strongly marked transverse dorsal ridge, the depression covered 
with a patch of piliferous punctures intersected longitudinally by a sub-elevated median 
line; the elytra are very slightly longer than the prothorax, expanding somewhat towards 
the declivity, but nowhere exceeding the greatest breadth of the prothorax, the sides are 
straight until the declivity, when they become abruptly truncate, each ending apically in 
‘a blunt spine (as seen from above) caused by the sudden thickening of the sutural edges ; 
the elytra become very dark apically, the apical truncate surface is nearly vertical, shiny, 
with four impressed and curved striz on each side of the suture; the upper edge of the 
declivity is clothed with a fringe of pale hairs, and the fundus has an irregular surface, 
depressed on each side of the suture near the apex ; the irregular interstitial punctures 
on the fundus are very evident. 
Closely allied to X. amputatus and X. mancus Blandt., especially to the latter, from 
which the present species only differs in the shape of the prothorax, the number of rows 
of punctures on the fundus, and the punctuation of the interstices. Three specimens. 
Loc. Seychelles. Mahé: high forest of Morne Blanc, X. 1908, and from near 
Morne Blanc, XI. 1908; Cascade Estate, ca. 1000 feet, I. 1909. 
