BY ARTHUR M. LEA. 483 



Exithius brkvis Lea, I.e. 

 Hab. -New South Wales. 



Exithius simulator Lea, Mitt. Natur.Mus. Hamburg, 1909, p. 202. 

 Hab. — Queensland, New South Wales. 



Exithius fumatus Lea, I.e. 

 Hab —Queensland. 



Genus Exithioides Lea, Trans. Roy. Soc.S. Aust.,1912,p.ll6. 



Exithioides punctatus Lea, I.e. 

 Hab. — New South Wales. 



Genus Eufaustia Lea, I.e., p. 1 1 7. 



Eufaustia mirabilis Lea, I.e., p. 11 8. 

 Bab. - New South Wales. 



Genus Onidistos Pascoe, Trans. Ent. Soc. Lond., 1870, p. 465. 



Head with four more or less distinct foveae or excavations. 

 Eyes large, finely faceted. Rostrum long and thin. Antennae 

 rather slender. Prothorax transverse, base strongly bisinuate. 

 Scutellum small, more or less transverse. Elytra subcordate, not 

 much wider than, and but little more than twice the length of pro- 

 thorax; base trisinuate. Mesosternal receptacle slightly raised, 

 walls of base and of the anterior edges thinner than elsewhere; 

 emargination V-shaped; open.* Metasternum shorter than basal 

 segment of abdomen ; episterna distinct. Abdomen large. Femora 

 subpeduneulate, not grooved, strongly and acutely dentate. Briefly 

 elliptic or elliptic-ovate, convex, squamose, punctate, winged or 

 apterous. 



Mr. Pascoe, in describing the genus, said that he had a species 

 from New Caledonia, and imagined that Montrouzier had described 

 several others. I have only Australian ones under observation, all 

 of which are from Queensland, or the northern coastal districts of 

 New South Wales. Onidistus is a very distinct genus, but is allied 

 to Paleticus, from which it may be distinguished by the open, or at 

 least but feebly cavernous, mesosternal receptacle, and strongly 



* In 0. subfomicatus, although apparently open, it is in reality very 

 slightly cavernous, as may be seen on probing it with a pin. 



