522 



REVISION OF THE AUSTRALIAN CURCULIONID^ 



BELONGING TO THE SUBFAMILY 



CR YPrORHYNC HIDES. 



By Arthur M. Lea. 



Part IV. 



This instalment deals with PsepJiolax and allied genera, forming 

 a group not only remarkable on account of the form and sculpture 

 of its members, but on account of their peculiar distribution. 

 Psepholax resembles many of the Scolytidte {e.g., Hylesimis, 

 Hylastes) not only in shape, but in structuie of limbs, parts of 

 under surface, &c. In all, the tibiee (especially the intermediate 

 pair) are very remarkable. Great diversity exists in the meso- 

 sternal receptacle. In Oreda and Zeneudes the walls of the pectoral 

 canal terminate in front in teeth-like processes. Zeneudes is the 

 only genus of the subfamily as yet described in which the 

 scape terminates considerably before the eye; in several other 

 genera {e.g., Neozenexides, Oreda) the scape when drawn out at 

 right angles to the rostrum does not appear as if it would extend 

 back to the e3'e, but when at rest it can be seen to touch its lower 

 extremity. Hyhomorphus, the only apterous member of the 

 group, is perhaps the most remarkable genus of all the Australian 

 weevils. 



Pectoral canal not acutely margined. 



Rostrum very short Psepholax. 



Rostrum long Hybomorphus. 



Pectoral canal acutely margined. 



Scape not attaining the eye Zeneudes. 



Scape attaining the eye. 



Mesosternal receptacle open. 

 Receptacle witli oblique sides. 

 Eyes finely faceted. 



