168 Proceedings of the Royal Society of Victoria. 



fortiter punctulato, lateribus leviter arcuatis, angulis omnibus 

 obtusis, basi infra superfieiei planum marginata ; scutello trian- 

 gular! minus elongate; elytris crenulato-striatis, interstitiis minus 

 latis antice sat fortiter convexis postice sat anguste carinatis, 

 spina hunierali parva ; metasterni disco fere laevi ; tarsorum 

 posticorum articulo basali valde elongate. 



Long. U 1. Lat. f 1. 



In common with the preceding four species, this Ataenius has 

 a liindward projecting ridge along the base of the prothorax, 

 below the plane of the dorsal surface, which, if the prothorax is 

 in contact with the base of the elytra, simulates a basal margin 

 of the pronotum. In many species of Ataenius the correspond- 

 ing ridge is (though not absolutely wanting) much less defined 

 and conspicuous. The present insect is of convex (and but little 

 parallel) form, similar to that of A. tweedensis, Blackb., and A. 

 gibbus, Blackb., from both of which it differs I'fi^er alia by the 

 considerably closer puncturation of the disc of its pronotum. 

 That segment is somewhat similarly punctulate in the species 

 mentioned above as A. australis, Har., but differs by its well- 

 defined longitudinal sulcus. 



N. Queensland (Mr. Koebele). 



A. CONSORS, sp. nov. 



Sat angustus ; sat parallelus ; sat convexus ; fere glaber ; sub. 

 nitidus ; niger, clypei margine palpis antennis pedibusque rufes 

 centibus ; capite postice punctulato, antice et latera versus sub- 

 tilius minus crebre granulato, antice emarginato ; sutura clypeali 

 nulla; prothorace quam longiori ut 4 ad 3 latiori, supra sat 

 aequaliter (basin versus fortiter uiinus crebre) crebre vix fortiter 

 punctulato, lateribus leviter ai'cuatis, angulis omnibus obtusis, 

 basi infra superfieiei planum marginata ; scutello triangular!, 

 modice elongato ; elytris crenulato-striatis, interstitiis sat angus- 

 tis antice sat convexis postice carinatis angustis, spina humeral! 

 parva ; metasterni disco puucturis non nullis sat grossis impresso ; 

 tarsorum posticorum articulo basal! valde elongato. 



Long. \^^ 1. Lat -^-^ 1. (vix). 



The puncturation of the pronotum is not much different in 

 distribution from that of the species referred to above as A. 

 australis, Har., but it is conspicuously less coarse and becomes 



