liV THOMA-S d. SLOANE. 415 



o( 10) Prothorax with well-developed lateral inar^'iiis. Tarsi with 

 fourth joint not bilobate. 



6(7) Elj^tra fully striate, stria? attaining apex. (In E. ohsi-nra 



Cast., apex of elytra nitid and faintly striate) Eiidalia. 



7(()) Strife of elytra obsolete towards apex. 



8(9) Head short behind eyes; neck thick. Prothorax lightly am- 

 pliate at anterior third; base and apex of about equal widtli; 

 lateral borders divergent forwards ; median line strongly 

 impressed. Elytra with all stria strongly marked at base; 

 posterior three-fourtlis nitid, smooth ; apex bisinuately 

 truncate Basistlchu,^. 



9(8) Head elongate-oblique behind eyes; neck strangulate, very 

 narrow. Antenna? with third joint very long (almost as long 

 as two succeeding joints together), fourtli joint raised above 

 fifth at apex on upper side, hardly setose. Prothorax 

 elongate, evidently narrower at apex than at base; lateral 

 borders parallel ; disc transversely striolate, median line 

 faint. Elytra with sixth and seventh strict obsolete, others 

 strongly impressed only on basal third; three rows of fine 

 setiferous pores on each elytron — on third and fifth inter- 

 stices and at position of seventh interstice. Prosternum, 

 mesosternum, and metasternum stronglj^ punctate Clartncia. 



\0{o] Prothorax with lateral margins obsolete. Tarsi with fourth 



joint bilobate Opli ionea. 



Habits. — Lachnothorax palustris is common about salt marshes 

 at Cairns; its range extends to the King River, Northern Terri- 

 tory. L. riverince is found about the edges of freshwater-swamps 

 in the Riverina district of N. S. Wales (Mulwala and Urana). 

 Porocara, and the typical species of Eudalia, are found on river- 

 sandbanks, or stone-beds (B. castelnaui)\ but I do not know the 

 habits thoroughly of many species of Eudalia, though I believe 

 all are riparian species living beside permanent water. Basi- 

 stichus micans is found under logs and debris away from water 

 in Eucalyptus forests of the coastal districts of tropical Queens- 

 land. I do not know the habits of Clareiicia and Ophionea, but 

 suppose them to be frequenters of marshy places. 



Porocara, n.gen. 

 Robust, convex. Head large, punctate ; neck short, very 

 thick. Mentum with sinus oblique on sides; median tooth wide, 

 triangular, prominent; lobes obtuse at apex. Ligula corneous; 



