320 REVISION OF THE GENUS XOTOSOMUS, 



Oval, convex. Black; elytra often of a greenish or purple 

 colour. Head oval, convex. Pro thorax broader than long 

 (4 X 4-5 mm.), rounded on sides, a little more strongl}'- so poste- 

 riorly than anteriorly; basal angles widel}^ rounded, not the least 

 marked; posterior marginal puncture on edge of border; lateral 

 basal impressions deep, foveiform. Elytra oval (9 x 5'3 mm.); 

 four inner striae strongly impressed, 5-7 obsolete, third 2-punctate. 

 Prosternum with anterior margin bordered. Intercoxal declivity 

 rounded. Length 14-16, breadth 4*7-5 -3 mm. 



Hab. — S.W. Australia : Swan River, Pinjarrah, Donnybrook 

 and Bridgetown (Lea), Albany (Masters). 



iV^. mediosidcatus has no affinity to any other species. It is an 

 isolated species, and varies greatly. 



NoTONOMUS MOLESTUS, Chaudoir. 



Feronia [Notonomus) molesta, Chaud., Bull. Mosc. 1865, ii. 

 p. 89 ; Ternox ohsoletus, Motsch., I.e., p. 268 ; Per. (Percus) 

 lacustris, Casteln., Trans. Roy. Soc. Vict. 1868, viii. p. 222. 



Robust, convex. Black, shining. Elytra obsoletely striate; 

 third interstice depressed, 2-punctate on posterior half; humeral 

 angles strongly dentate. Length 23, breadth $ 7*5, ^ 8*2 mm. 



Hab. — Vic. : Grampian Mountains (Best). 



Differs from N. chalybeus, Dej., by its larger size; more robust 

 form; prothorax more strong^ narrowed to base, more rounded 

 on sides, with lateral basal impressions broader and less elongate; 

 elytra with humeral angles strongly dentate. From N. gravis, 

 Chaud., It differs by its larger size; prothorax with sides less evenly 

 rounded (oblique towards base), basal angles less rounded; elytra 

 strongly dentate at humeral angles, more strongly sinuate on 

 each side of apex. 



NOTONOMUS KERSHAWI, n.Sp. 



Elliptical, subdepressed. Prothorax truncate-cordate, sub- 

 sinuate on sides posteriorly; basal angles subrectangular: elytra 

 obsoletely striate on disc; interstices not raised; humeral angles 



