XXX. — New species of Staphylinidae from 

 Borneo. By Malcolm Cameron, m.b., r.n., f.e.s. 



OXYTELINAE. 



EUPIESTUS BORNEENSIS n. sp. 



Opaque pitchy black ; thorax with six sharp parallel 

 keels, the median pah- interrupted by a deep transverse 

 impression across the middle. Antennae and legs ferruginous. 



Length 2.3 mm. 



Smaller than E. sculplicollis Kr., and opaque, the head 

 more rounded and less triangular, the tlioracic keels parallel, 

 not at all united; from E. ocularis Fauv., which it resembles 

 in colour and opacity it differs in the much smaller size, 

 shorter less robust antennae, sharper thoracic keels, median 

 impression shorter and transverse. Head subtriangular, 

 narrower than the thorax, ej^es not prominent, postocular area 

 rounded, anterior margin rounded, front on either side deeply 

 and broadly impressed, the space between umbonate, shining, 

 finely and sparingly punctured ; antennal tubercles well 

 developed, shining, vertex deeply and broadly sulcate, opaque 

 moderately finely and closely punctured, sulcate on either 

 side above the eyes : antennae wdth the 1st joint stout, 2nd— 

 3rd of equal length, 4th scarcely, 5th to 10th distinctly 

 transverse, not increasing" in breadth after the 7th ; 11th 

 conical. Thorax transverse, the sides parallel for the first two 

 thirds, then strongly contracted, emarginate before the 

 rectangular posterior angles, the disc with six well defined, 

 sharp, parallel keels of which the central pair are interrupted 

 by a transverse depression about the middle, puncturation 

 moderately coarse and close. Elytra a little broader than the 

 thorax, square, each with fonr parallel keels, sutural, humeral 



