BY T. G. SLOANE. 429 



the elytra are wanting. If this form is constant, (only one speci- 

 men has yet been repotted) it may be regarded as a distinct 

 species, but I now feel doubtful about its constancy. 



34. Notonomus polli, n sp. 



(J. Elliptical, depressed. Prothorax lightly transverse; disc 

 transversely striolate, not opaque; posterior marginal puncture 

 on inner side of marginal channel a little before base : elytra 

 truncate-oval, deeply striate; interstices convex, third 2-punctate, 

 eighth depressed and much wider than ninth on basal half ; 

 humeral angles dentate. Upper surface bronzy (head faintly so); 

 legs piceous. 



Head 2*1 mm. across eyes. Prothorax depressed, broader than 

 long (2-6 x 3 mm.), wider across base (2*3 mm.) than apex (2*15 

 mm ); pronotum subnitid, closely covered with fine wavy striolae; 

 sides lightly rounded, lightly narrowed to base without juxta- 

 basal sinuosity; basal angles obtuse; lateral border and channel 

 wide posteriorly; median line strongly impressed; lateral basal 

 impressions sulciform, elongate, uniting with basal channel at 

 base. Elytra'depressed, truncate-oval (6*3 x 3-3 mm.), lightly and 

 evenly rounded on sides, strongly sinuate on each side before 

 apex; interstices convex, 1-5 with summits a little flattened on 

 disc, fifth with a foveiform puncture a little before middle, 

 eighth about as wide as seventh towards base, ninth very narrow, 

 tenth well developed, but short. Length, 11; breadth, 3-3 mm. 



Hub. — N.S.W.: Richmond River. Unique in Coll. Sloane. 



A remarkable species, which differs from all the others of the 

 opacicollis-group, by the following characters in conjunction. 

 Small size; pronotum transversely striolate, but not rendered 

 opaque by longitudinal rugae; eighth interstice of elytra much 

 wider than ninth on basal half, second, fourth, and sixth inter- 

 stices without fovese. The well marked puncture of the fifth 

 interstice is a most remarkable character; and, although it occurs 

 on each elytron in my unique specimen, I do not feel sure that it 

 may not be an individual variation rather than a feature of the 

 species. Though N. polli seems to give a clue to N. striaticollis 

 Cast., I cannot identify it as that species on account of its dif- 



