456 STUDIES IN AUSTRALIAN* ENTOMOLOGY, xvii., 



Hab. — N.S.W.: Comboyiie (Sloaiie). Four specimens, found 

 on the lower slopes of Mount Bulli, near the Thorne River. 



Differs from N. australis Cast., and its var. N. lapeyronsci 

 Cast., by its broader and heavier form: colour (upper surface 

 wholly a?neous); prothorax more transverse, more lounded on 

 sides, less narrowed and less sinuate to base, border wider. 



L I T A R T H R u M, n.gen. 



Oval, subdepressed, apterous. Head small, smooth; front not 

 impressed; two supraorbital punctures on each side. Eyes ^moW, 

 distant from buccal fissure. Antennct slender, lightly compressed; 

 three basal joints cylindrical, glabrous, first stout, as long as 

 second and third together, second small, third a little longer than 

 second, shorter than fourth. Lahrinn truncate. Maxilhe nar- 

 row, curved and strongly hooked at apex. Falpi slender. 

 Mcutum with a short, obtusely rounded, median tooth. 7Vo- 

 thorax transverse, depressed, nmch wider at base than apex, 

 lightly rounded on sides; basal impressions obsolete; border nar- 

 row, not reflexed, obsolete only in middle of base and apex; basal 

 angles not marked; two marginal punctures on each side, pos- 

 terior on border at basal angle. Elytra wide, rather convex, 

 lightly striate, bordered at base; humeral angles not dentate; 

 striae finely crenulate; interstices depressed (except seventh and 

 eighth towards apex); scutellar striole obsolete; interruption of 

 border on each side of apex obsolescent, inner plica not apparent. 

 Sterna smooth; metasternum small, very short between inter- 

 mediate and posterior coxal cavities; metepisterna short, wide. 

 Ventral segments not transversely sulcate: (J with a large, sub- 

 marginal, setigerous puncture on each side of apex. Tarsi(^): 

 anterior with three basal joints wddely dilatate, basal joint 

 oblique at apex, second and third cordate, fourth very small; 

 four posterior tarsi slender, first joint very long; in intermediate 

 tarsi, as long as the tliree succeeding joints together; in posterior 

 tarsi, longer than the next three joints together (about as long 

 as the remainder of tarsus). 



The insect, on which the genus Lilarthrnin is founded, re- 

 sembles a w'ld^ Shnodontus, but the nonsulcate ventral segments. 



