524 NOTES ON AUSTRALIAN COLEOPTERA, 



SCIRTES HELMSI, Sp.llOV. 



Oblongo-ovalis ; sat depressus ; sat nitidus ; fuscus, antennarum 

 basi, pectore, tibiis tarsisquedilutioribus; pubescens, subtiliter 

 crebre punctulatus. [Long. 2, lat. l\ lines. 



Compared with the European S. hemisphcericus this species is 

 larger and much narrower and more elongate, with very similar 

 colouring, pubescence and puncturation. 



Victoria ; taken near Benalla by Mr. Helms. 



Metriorhynchus gigas, sp.nov. 



Ater, elytris runs ; prothorace transverso, 7-areolato ; elytrorum 

 sutura margine laterali lineisque 4 discoidalibus costatis, 

 intervallis biseriatim cancellato-punctulatis ; rostro quam 

 prothorax vix breviori. 



Maris antennis valde flabellatis, flabellis basalibus externe 

 serratis, articulo ultimo perlongo. 



Feminse antennis sat fortiter serratis, articulo ultimo quam 

 maris paullo breviori. [Long. 7-9, lat. 2-3 lines. 



This magnificent species is nearly allied to M. rujipennis, Fab., 

 and M. erythropterus, Er., but is at once distinguished by its 

 great size. As I am not certain about the correctness of my 

 identification of M. rujipennis I will say no more of it than that 

 it is a very much smaller insect. Compared with M. erythropterus, 

 Er., the present species differs chiefly (apart from size) by its 

 more slender and elongate rostrum and the remarkable antennae 

 of the male, the length of the joints of which (measured from the 

 base of the external margin to the apex of the flabellum) is 

 scarcely less than the length of the prothorax and is more than 

 ^ of an inch ; the apical joint is twice as long as the external 

 margin of the penultimate joint ; the internal margin (supposing 

 the antennae directed forward) of the flabella is cut into about 

 four well marked teeth. Mr. Waterhouse's figure of the antennae 

 of M. rujipennis in his monograph of Metriorhynchus (Tr. Ent. 

 Soc. Lond., 1877, PI. I. fig. 7) represents it as much less strongly 



