BY THE REV. T. BLACKBURN. 125 



Near D. sepidioides, Pasc, and differing from it by its longer 

 tarsi (the 2nd joint of the hind tarsi scarcely shorter than the 

 1st), the very much feebler carinse of the rostrum, and the larger 

 and differently arranged tubercles of the elytra ; in the outer row 

 the tubercle nearest the base is much larger than either the 1st 

 or 2nd in the same sex of sepidioides, and is placed slightly further 

 back than the 1st is in that species. The apical ventral segment 

 is transversely sulcate near its hinder margin, the sulcation being 

 not very sharply defined and being extended forward a little in 

 the middle. 



W. Australia ; near York ; sent to me by C. French, Esq. 



Opetiopteryx, gen.nov. 



Caput sequale ; rostrum breve crassissimum a capite vix dis- 



tinctum ; mentum profunde in cavitate immersum ; scrobes 



antice positse, ab oculis longe remotse, leviter arcuatse ; 



antennarum brevium scapus oculum vix attingens ; hie 



rotundatus sat parvus a prothorace liber ; prothorax asqualis 



antice bisinuatus, postice truncatus, in medio canaliculatus, 



utrinque leviter arcuatus, lobis ocularibus distinctis; scutellum 



minutum ; elytra aequalia, ovalia, apice singulatim acuminata, 



humeris hand prominulis ; tibite sat rectae, apice (pi"8esertim 



anteriores 4) introrsum acuminato-dilatatis ; tarsi breves 



sat paralleli, articulis basalibus 3 fortiter transversis subtus 



tomentosis. 



The insect for which I propose this name is one of the most 



perplexing Gurculionidce I have met with ; its head and rostrum 



(including the mouth organs as far as they can be examined 



without dissection) are extremely like those of Sclerorhinus, 



except that the upper surface of the rostrum is very evidently 



narrowed forward and is only obsoletely concave longitudinally, 



and has a very feeble carina down its middle, at the hind end 



of which is a small fovea, while the scrobes are extremely short, 



being separated from the eyes by a very long interval, and the 



scape of the antennae when laid back scarcely reaches the eyes. 



The funiculus of the antennae is scarcely longer than the scape, 



