80 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 



lateral; marginal impressions deep, continuous, and not very 

 narrow. Elytra not much (but rather suddenly) wider than 

 prothorax ; seriate-punctate, each puncture with a central pit; 

 interstices narrow (the sutural rather wide) and each slightly 

 encroached upon by punctures, the interspaces opaque. Mentum 

 shining and lightly transversely wrinkled; rest of under surface 

 of head and apex of prosternum opaque; mesosternum triareolate 

 in middle; metasternum with a few coarse punctures on flanks; 

 suture between 1st and 2nd abdominal segments deep in middle, 

 2nd and 3rd rather lightly transversely impressed near apex, 4th 

 more deepl}' impressed, 5th coarsely and irregularly punctate. 

 Length 6, width 2 mm. 



Hab. — Cairns, Q. (Macleay Museum). 



This species is also somewhat after the st3"le of R. lignarius, 

 but may be at once distinguished by the very different punctures 

 and interstices of the elytra, and the short median prothoracic 

 ridges. The marginal impressions of the prothorax might very 

 fairly be regarded as sulci. 



Rhysodes mirabilis, n.sp. 

 (Plate iv., fig. 7.) 



Black, shining; legs obscure piceous-red. 



Head deeply bisulcate; median lobe very narrow posteriorly, 

 and terminated considerabh' before base ; lateral lobes large, 

 feebly transversely and longitudinally impressed. Antennae 

 stout, all the joints transverse except the 11th. Prothorax 

 decidedly elongate; deeply trisulcate; the ridges impunctate, the 

 median raised towards the middle, noticeably wider than the 

 lateral, and conjoined at apex; marginal impressions scarcely 

 visible from above. Elytra scarcely wider than the widest part of 

 prothorax, and very little longer than head and prothorax com- 

 bined; base emarginate; suture depressed at base and apex, but 

 perfectly flat in middle; each with three acute cost^ : the outer 

 commencing on each shoulder and conjoined at apex, the median 

 one slightly shorter and thickened at apex, the inner one still 



