BY OLIVER E. JANSON. 129 



DiAPHONIA ADUSTA, n.sp. 



g. — Sub-quadrate, moderately convex, shining black ; elytra 

 red-brown at the sides, piceous or black towards the suture and 

 apex ; a broad marginal border at the sides of the thorax, the 

 pygidium and a spot on the outer sides of the mesothoracic 

 epimera, and the posterior coxae and abdominal segments yellow ; 

 antennae and palpi red-brown ; tarsi piceous. 



Head rather coarsely but not very closely punctured in front, 

 more finely punctured behind ; clypeus sub-quadrate, a little 

 widened and slightly rounded in front, the margins thick and 

 strongly reflexed, the reflexed apical margin slightly emarginate 

 in the centre ; club of the antennae nearly as long as the head. 

 Thorax rounded at the sides, feebly tri-sinuous at the base, the 

 basal angles scarcely rounded, almost impunctate on the disk, 

 finely and somewhat diffusely punctured at the sides and base. 

 Scutellum triangular, almost impunctate, the sides impressed 

 Elytra with two rows of coarse punctures near the suture, the 

 interstice with scattered punctures, the lateral and apical parts 

 somewhat dull and closely covered with irregular confluent punc- 

 tures and striae, the inner discal costa rather prominent towards 

 the apex, the outer one almost obsolete. Pygidium sparsely 

 punctured. Underside punctured and with very sparse grey 

 pubescence at the sides ; metasternum deeply impressed in the 

 centre; mesosternal process narrowed and obtuse at the apex; 

 abdomen smooth and with a slight longitudinal impression in the 

 centre. Legs punctured and with sparse long hairs, all the tibiae 

 with a large acute submedian tooth, apex of the anterior tibiae 

 strongly produced on the outer side. Length 12-13 mm. 



Western Australia. 



This species is closely allied to rugosa^ Schm., but differs in 

 having the margins of the clypeus more strongly reflexed, the 

 thorax almost impunctate on the disk and more finely punctured 

 at the sides, the scutellum, inner part of the elytra and the 



