246 Lt.-Col. Winn Sampson on neir 



coarse facets ; antennae pale ferrngineons ; prothorax ferm- 

 gineous and shiny on the posterior half, gibbose and semi- 

 elliptical, slightly longer than broad, base truncate, with 

 posterior angles acute, anteriorly rugose, with 4-6 prominent 

 tubercles on the extreme anterior margin, the rugosity 

 decreasing to the middle, the posterior half shiny and punc- 

 tate, and the whole surface slightly pubescent. Elytra the 

 same breadth as the prothorax and one-half longer, the poste- 

 rior half parallel-sided and thence decreasing to form a 

 somewhat acuminate apex, longitudinally arched from base 

 to apex, with the basal third ferrugineous and shiny ; punc- 

 tate-striate, with the interstices irregularly punctured and 

 piliferous ; the apical portion dark and opaque, the inter- 

 stices becoming tuberculate in the centre, with a double row 

 of pale hairs, the remainder of the siarface being very finely 

 shagreened ; a slight sinuosity and depression of the inter- 

 stices near the suture is evident towards the apex ; the 

 under surface of the body uniformly coloured, except the 

 abdominal segments, Avhich are slightly darker, sparsely 

 hairy, and coarsely punctured ; the anterior coxae contiguous, 

 and the legs the same colour as the prothorax. 



This species is near X. capucmus, Eichh., but diflFers in 

 being narrower and longer, with punctate strise on the elytra, 

 the sides of which are rfot rounded from base to apex, &c. 



Xyleborus arquatus, sp. n. 



Oblongus, subnitidus, thorace semielliptico, anterius rugis trans- 

 versis scabro, posterius subtiliter punctulato, lineola media basali 

 dense hirta ; elytris striato-punctatis, iuterstitiis uniseriatim 

 punctulatis, lateribus subparallelis. 



Long. 2*5 mm. 



Hah. Ceylon. 



Compact in shape, with pale ferrugineous head and elytra 

 pitchy black ; head convex in front, the surface minutely 

 and uniformly shagreened, sparsely hairy towards the front, 

 with a row of pale hairs over the mouth ; eyes transverse, 

 black and emarginate ; antennae the same colour as the head ; 

 prothorax a dirty yellow, semielliptical, and as broad as long, 

 with sides and posterior angles rounded, rugose, but not 

 tuberculate, slightly hairy, obsoletely asperate behind, gibbose, 

 with a small tuft of yellowish hairs at the centre of the base ; 

 scutellum small and dark-coloured ; elytra one-half as long 

 again as the prothorax, with subparallel sides, and obtusely 

 rounded at the apex, slightly rounded at the basal angles, 

 longitudinally arched from base to apex, striate-punctate. 



