Descriptions of New Scolytldx. 207 



Scutellura rounded triangular, shining. Elytra wider than the 

 prothorax, and nearly twice as long, truncate at base, the humeral 

 angles rounded, the sides straight and divergent to the hinder 

 third, then broadly incurved to the apex, the margins of the latter 

 somewhat oblique and not conjointly rounded ; surface subnitid) 

 cylindrico-couvex to behind the middle, thence declivous, darker 

 posteriorly, lineato-punctate, the punctures moderately fine and 

 not easily distinguishable from those of the almost flat interstices, 

 which are punctured irregularly in alternate single and double 

 rows ; apex less flattened than in the preceding species, strongly 

 declivous, slightly impressed on each side of the suture, obsoletely 

 punctured, the interstices feebly convex, with minute piliferous 

 points. Underside concolorous, tibiae strongly serrate. 



Hah. Borneo, Sarawak (Wallace). 



JBoth my specimens have lost the antennal clubs ; those 

 of one example disappeared in process of cleaning, but 

 not before I had been able to observe that they were 

 of Dryocoites-l'ik.e character. The shape of the prothorax 

 is similar to tbat of D. sumatranus, but the species is 

 rather more depressed, widened behind, with the hairs 

 much finer and the punctures on the elytra fine and 

 ill-marked, so that the surface appears at first sight to 

 be tolerably closely and confusedly punctate. 



Xylehorus colossus, sp. n. 



Fem. Oblonga, cylindrica, nigro-picea, prothoracis antica parte 

 et elytrorum basi dilutioribus ; prothorace transverso, lateribus et 

 apice conjunctim rotundatis, angulis posticis postice productis, 

 apice medio prominulo, dorso post medium transverso elevato, 

 postice subopaco, subtiliter granulato ; elytris indistincte lineato- 

 puuctatis, interstitiis multipunctatis, apice oblique excavato-retuso, 

 retusione per totum elevato-marginata, superne prorsus producta, 

 longitudinaliter convexa, striato-punctata, interstitio 2'^ seriato- 

 tuberculato. Long. 8*5 mm., lat. 4'5 mm. 



Female. Oblong, cylindrical. Head piceous, front subconvex, 

 irregularly and subobsoletely punctate, scantily pubescent, epistoma 

 with a median patch of thick cilia ; eyes large, oblong, emarginate, 

 coarsely granulate ; antennae ferruginous, the club large, of normal 

 structure. Prothorax transverse, widest just before the base, the 

 sides and apex conjointly rounded, the former but slightly behind 

 the middle, margin of the latter prominent, everted and crenate in 

 the middle, hind-angles produced backwards, the base bisinuate ; 



