404 REVISION OF THE AUSTRALIAN CURCULIONID^, VIII., 



ment; episterna wide. Abdomen with the 1st segment as long 

 as 2nd-3rd combined, intercoxal process not \ ery wide and semi- 

 circular, apex incurved or straight; 3rd and 4th combined the 

 length of 2nd and distinctly longer than 5th, their sides drawn 

 slightly backwards. Legs moderately long; femora dentate, not 

 (or scarcely visibly) grooved, posterior passing elytra or not; 

 tibiae compressed, more or less distinctly curved or bisinuate, 

 sometimes straight, with a subapical tooth in addition to terminal 

 hook; tarsi not very long, 3rd joint wide and deeply bilobed. 

 Elliptic or subelliptic, convex, squamose, nonluberculate, winged. 



A highly remarkable genus. Between the four anterior coxae 

 the pectoral canal is seen to be bordered by distinct walls; these 

 are principally formed by the prosternum, but also partly by the 

 mesosternum. It is the only genus, other than Camptorrhinns 

 and Aonychus, in which the prosternum has a supplementary 

 process. The walls are polished internally and appear almost to 

 belong to the mesosternum, but on removing the prothorax it 

 can be seen that there is a narrow basal ridge (traceable across 

 summit but concealed there with elytra in position) that imme- 

 diately behind the coxae becomes elevated and forms the wall on 

 each side of the canal. The mesosternal receptacle is not entire, 

 but consists of a short basal piece (seldom distinctly separated 

 from the metasternum) and a short process (concealed entirely 

 unless the prothorax be removed) on each side that fit into the 

 sides of the prosternal walls. The rostrum is frequently very 

 long and is never stout. The sutures of the joints of the funicle 

 are often indistinct. The sexual differences are very pronounced; 

 the male has a shorter, and stouter rostrum which is ridged 

 and squamose behind antennae, and these are inserted closer to 

 the apex than in the female. The genus is not confined to Aus- 

 tralia, several species having been described from New Guinea, 

 New Caledonia, &c. 



The species of the genus as now defined are not very homo- 

 genous in appearance, but it was not considered advisable to 

 generically separate any of them, as the characters of the pro- and 

 mesosternum are the same in all. It is true that they are the 



