BY T. {;. SLOANE. 201 



strongly sti'iate, fourth stria not marked, apical declivity non 

 striate. 



Table of species of the genus Me,oms. 

 1(6) Elytra with fourth and fifth strict well developed on apical declivity. 



2(3) Elytra 5-striate on disc M. ni<jer Cast. 



3(2) Elytra 4-striate on disc. 



4(5) Strije of elytra deeply impressed, prothorax strongly rounded 



on sides M. conrexus SI. 



5(4) Strife of elytra lightly impressed, prothorax lightly rounded on 



sides M. angusticollis SI. 



6( 1 ) Elytra with apical declivity and sides beyond fourth interstice 



Inevigate. 

 7(8) Elytra deeply 4-striate, prothorax with sides strongly rounded 



and strongly sinuate posteriorly M. amplicollis SI. 



8(7) Elytra lightly 3-striate, prothorax with sides lightl5' rounded 



and lightly sinuate posterioi-lj'. 



9( 10) Size large ( 15 '5 mm. ) M. semisfriaius SI. 



10(9) Size small (9 mm.) M. minor SI. 



xVote.— No specimen of J/, ater Cast., is available to me at 

 present. It is said by Castelnau to differ from J/, idger Cast., 

 by having four strife on the elytra, not five as in M. 7iic/er. It 

 is allied to M. anyusticollis SL, from Dorrigo, N.8.W., which 

 requires comparison with it; specimens of M. n.i</er are in the 

 Howitt Collection at the National Museum, Melbourne, ticketed 

 " Brisbane. " 



TRICHpSTERNUS(?) AUSTRALICUS, U.sp. 



Elongate; head large, mentum with sinus parallel on sides, 

 median tooth bifid; palpi elongate, slender; antennse slender, 

 setaceous; prothorax subcordate, lateral mai'gins wide, basal 

 angles obtuse, posterior marginal seta a little before base; elytra 

 oval, strongly striate, interstices lightly convex, 3, 5, and 7 

 seriate-punctate, basal border a little raised at humeral angles, 

 lateral mai'gins wide; prosternum glabrous between coxte; met- 

 episterna short; legs long, light ; posterior- trochanters long, 

 narrow, depressed on posterior side; anterior tarsi in ^ with 

 three basal joints dilatate and biseriately squamose beneath. 

 Nitid, occiput and disc of pronotum dark copper ; front and 

 sides of pronotum brassy; elytra dark copper with bright cupreous 



