^40 ]\Ir. Oliver E. Janson's Descriptions of 



Legs punctured and pubescent, anterior and intermediate 

 tibiae armed externally with two stout teeth, posterior 

 tibiae with a single acute tooth in the centre, apex strongly 

 dilated. 



Western Australia. Coll. Janson. 



Most nearly allied to D. mctallescens, White, from 

 which it differs in its more robust and convex form, its 

 broad clypeus, the coarse sculpture of its elytra and in its 

 flat and un dilated mesosternal process. 



Figure 6 represents the head of D. meiallescens. 



Diaphonia maura, n. sp. Plate VII., fig. 7. 



(^ . Nigra, nitida, capite sparse punctato, clypeo quad- 

 rato, apice vix emarginato, crebre punctato, elytris grosse 

 crebreque punctatis, tibiis brevis extus unidentatis. 

 Long. 6^ lin., lat. 4 lin. 



Black, shining, underside and femora sparsely clothed 

 with whitish pubescence. 



Head with a few punctures on each side at the base, 

 clypeus quadrate, slightly emarginate in front, the margins 

 slightly elevated, finely and closely punctured. 



Thorax somewhat coarsely punctate, the punctures closer 

 at the sides, centre of disc smooth. 



Scutellum convex, depressed at the sides, with a few 

 lateral punctures. 



Elytra coarsely punctured, two smooth slightly elevated 

 ridges on the disc, the outer one somewhat obscure, the 

 punctures very large and confluent at the sides, sparsely 

 scattered on the disc and forming a stria next the suture, 

 sutural interstice with a few scattered punctures, suture 

 depressed, apical callus distinct. 



Pijgidium transversely strigose, its apex with oblong 

 punctures. 



Beneath coarsely punctured at the sides, apex of mesos- 

 ternal process not dilated, abdomen with a deep longitudinal 

 furrow. 



Legs punctured, tibiae short, unidentate externally, the 

 apical spines and the teeth on the anterior tibiae very acute. 



Western Australia. Coll. Sharp. 



Closely allied to D. ragosa, Schaum, but differs from it 

 in being entirely black, slighly narrower, and in the quad- 



