588 REVISIONAL NOTES ON AUSTRALIAN CARABID^, V., 



Epimicodema, n.gen. 



Elongate, depressed, winged, brown. Head small, strongly 

 constricted to a narrow neck; orbits strongly developed behind 

 eyes, setigerous; two supraorbital sensitiv^e hairs on each side. 

 Antennae short, stout, compressed. Clypeus truncate; one sensi- 

 tive hair at each side. Labrum large, rounded; one sensitive 

 hair at each side. Mentum with lobes sharply pointed; median 

 tooth prominent, triangular. Ligula wide, rounded on each side; 

 apex emarginate in middle; a sensitive hair at each side of apical 

 emargination a little behind margin. Labial palpi stout; apical 

 joint wide, truncate, about as long as penultimate joint. Max- 

 illae : inner lobe with apical hook long, sharp, set almost at right 

 anf'les; inner margin with a lightly developed median prominence; 

 palpi with penultimate joint very short, apical joint wide. Pro- 

 thorax small, narrow, strongly narrowed to base; upper surface 

 setit^ero-punctate. Elytra striate ; scutellar striole elongate ; 

 interstices biseriately punctate (punctures of second and fourth 

 tending to become 3-seriate towards apex); eighth biseriately 

 punctate, not wider than ninth. Prosternum depressed, without 

 anterior marginal sulcus. Anterior tarsi short ; penultimate 

 joint short, wide, lightly emarginate. Type, Helluosoma mastersi 

 Macl. 



Habits : on tree-trunks, under bark. 



A monotypic genus evidently isolated from all others. By the 

 form of its ligula, it is more allied to Helluod'ima than to Helluo- 

 soma. Though more related to Helluodema and Helluosoma than 

 to any other genera, there seems no near affinity to either. 



Epimicodema mastersi Macleay. 



Helluosoma mastersi Macl., Trans. Ent. Soc. N. S. Wales, ii., 

 1871, 83. 



Dimensions : length 14 mm.; head 2-2 mm. across eyes ; proth. 

 2-35 X 5 ; el. 7 x 4mm.^ 



Jlab. — Northern New South Wales to Rockhampton (Bruns- 

 wick River, N.S.W., Carter; Gayndah, Q., Masters). 



