278 Mr. Cameron on 



the middle, the mandibles and trophi yellow, the tips of the 

 mandibles black, piceous-red before the black. Thorax 

 punctured, closely covered with pale pubescence ; a line on 

 the collar, tubercles, tegulae, the scutellum, except at the 

 apex, clear stramineous-yellow ; the lateral plates of the 

 metanotum pale yellow. Pronotum rounded, the sides 

 obliquely truncated ; scutellum stoutly keeled down the 

 centre ; the central mucor longer than broad, very slightly 

 and gradually dilated towards the apex, which is acutely 

 and somewhat triangularly, incised ; the lateral plates are 

 large, curved outwardly and ending in a sharply triangular 

 point ; median segment with an oblique slope, finely 

 shagreened ; there is a short furrow below the central 

 mucor ; two keels run from the lateral plates, becoming 

 united near the apex of the segment ; and two other keels 

 run from the sides ; metapleurse finely longitudinally 

 shagreened. Abdomen shining, closely punctured ; a yellow 

 line on the side of the segments ; pygidial area densely 

 covered with stiff depressed golden-fulvous hairs. Wings 

 clear hyaline, the recurrent nervure quite straight, not 

 oblique, and received before the middle of the radial cellule. 

 Length nearly 5 mm. 



OXYBELUS CANESCENS Sp nov. (PI. X., f. 22.) 



Head closely punctured, densely covered with long grey 

 pubescence. Ocelli separated from each other by twice the 

 distance they are from the eyes, which are very slightly 

 diverging towards the clypeus. Mandibles pale yellow, the 

 apex black. Collar projecting in the middle, slightly 

 concave, and with an oblique slope to the head. Thorax 

 densely covered with a greyish pubescence, strongly punc- 

 tured, the pleurae almost rugose ; the oblique furrow crenu- 

 lated; there is also a longitudinal furrow, and a narrow oblique 

 one runs down from the apex of the fore wings. Lateral laminse 

 curved, bi-dentate at the apex, the central curved, convex 



