230 insects of the cairns district, northern queensland, 



30. Metriorhynchus centralis. 



The coloration of this species exactly i-eserables the last except that 

 it is perhaps of a more ochraceous red, it is also a broader looking 

 species. The rostrum is more hirsute at the extremity, and the 

 maxillary palpi are longer and more pointed, these being in the last 

 species very short and stout. The thorax also is more rounded in 

 front and more rugosely punctate in the areolets than in 

 M. elongatus, and the central areolet which is rounded in front is 

 blackish. The elytra are five times the length of the thorax and 

 quadricostate, the intermediate smaller costte being less distinct 

 than in the last species, the intervals transversely punctate. 



Length, 8 lines. 



Hah. — Cairns. 



31. Metriorhynchus serraticornis. 



Black, thorax and elytra red, the latter with the excreme apex 

 black. Rostrum elongate, reddish on the sides, the palpi nearly 

 of equal thickness throughout, and the joints of nearly equal length. 

 Antennae compressed, each joint acutely produced at the inner 

 apex ; the third joint longest, the rest about equal. Thorax as 

 long as wide, the 7 areolets deeply marked, the anterior 4 rugosely 

 punctate, the apex and interior angles rounded, the sides gradually 

 widening to the base with a tooth-like angle a little behind the 

 middle, and the base bi-emarginate, notched in the middle and 

 acutely angled. Elytra elongate, quadricostate, the intervals 

 densely packed with two rows of transverse quadrangular punc- 

 tures, separated by minute ridges. Thighs red, in the anterior 

 four to the knee joint, in the posterior at the base. 



Length, 6^ lines. 



Hah. — Mossman River. 



32. Metriorhynchus foliatus. 



Black, the thorax and elytra reddish-yellow excepting the 

 middle of the thorax and the scutellar region which are black. 

 Rostrum elongate, the palpi a little tumid at the apex, the 



