414 SOME UNDESCRIBED SPECIES OF COLEOPTERA, 



TlBARISUS ROBUSTUS. 



Black, nitid. Head broad, smooth, slightly convex, with 

 two short oblique impressions on each side in front. Mandi- 

 bles strong. Thorax broader than the head, and broader 

 than long, the anterior angles prominent, the sides strongly 

 margined with a strong puncture in the upper half of the margin, 

 rounded in the middle, the base truncate and slightly narrower 

 than the apex ; the median line is distinct, and there are two 

 impressions on each side of it at the base, one deep and elongate, 

 the other, close to the posterior angle, very short and less deeply 

 impressed. Elytra twice the length of the thorax and a little 

 broader, convex, of oval form, strongly striated, the interstices 

 broad and moderately convex, the stria nearest to the lateral 

 margin very lightly impressed, but with deep punctures along it 

 near the shoulder and towards the apex. 



Long. 8 lin., lat. 3 lin. 



Like T. melas Casteln. but proportionately shorter in the 

 elytra. 



PCECTLUS L^VIS. 



Black, nitid, antennas, palpi and legs piceous. Head with the 

 frontal impressions moderate. Thorax broader than the head, 

 rather flat, anterior angles rather rounded, sides a little rounded 

 behind the anterior angles, and very slightly emarginate towards 

 the base, which is truncate and rather broader than the apex ; the 

 posterior angles are rectangular, the median line is distinct and there 

 are two impressions on each side at the base, one elongate, the 

 other near the angle circular. Elytra broader than the thorax and 

 three times the length, very slightly convex and almost smooth ; 

 one very slight stria may be traced on each side of the suture, the 

 others are almost if not quite undistinguishable, excepting the two 

 nearest to the lateral margin, which are distinct and strongly 

 punctured ; on the base on each side of the scntellum there is a 

 broad depression. 



Long. 9 lin., lat. 3 lin. 



I have a specimen of this species in my collection from Port 

 Darwin. 



