2 68 REVISION OF THE GENUS NOTOyOMUS, 



anteriorly than posteriorly ; apex lightly emarginate ; anterior 

 angles obtuse, close to head; base truncate; basal angles not 

 marked; lateral margins a little explanate at basal angles; border 

 narrow; median line lightly impressed; lateral basal impressions 

 long, rather wide; lateral basal spaces rather wide and slightly 

 convex. Elytra oval (10 x 5*7 mm.), lightly convex; sides rounded; 

 lateral apical sinuosities wide, almost obsolete; basal border not 

 arcuate on posterior margin, joining lateral border without the 

 slightest interruption; lateral border narrow; ninth stria well 

 marked on apical third ; tenth interstice feebly de\eloped. 

 Intercoxal declivity of prosternum rounded ; of mesosternum 

 lightly concave. Length 15-17, breadth o"2-5'7 mm. 



^^6.— N.S.W. : Mount Kosciusko (Fletcher). 



The affinity of this species is to JV. politulus, Chaud., from which 

 it is readily distinguished by being narrower, much more convex, 

 the prothorax more rounded on sides and at basal angles, the 

 interstices of the elytra more convex, Szc. In facies it resembles 

 JV. rainbotvi, SL, but is smaller; prothorax wider at base, lateral 

 basal impressions more elongate and not approaching nearly to 

 the lateral border; posterior marginal punctures placed a con- 

 siderable distance in front of the basal angles (not on the border, 

 but a little away from it, on the flattened marginal part). The 

 elytra are very similar to those of iV. rainbovn. The position and 

 number of the punctures on the third interstice vary. 



NOTONOMUS RAINBOWI, n.sp. 



N. montanus, Rainbow, Rec. Aust. Mus. 1899, iii. p. 149. 



Elliptical-oval, robust, convex. Head convex, eyes very promi- 

 nent; prothorax convex, rounded on sides and at basal angles: 

 elytra convex, strongly striate; interstices convex, third 3- or 

 4-punctate; humeral angles not marked. Intercoxal declivity of 

 prosternum rounded ; of mesosternum concave. Black ; legs 

 piceous. 



Head smooth, convex between eyes (4-2 mm. across eyes); 

 frontal impressions light; eyes almost hemispherical, much more 

 prominent than posterior part of orbits — these protuberant, sloping 



