608 REVISIONAL NOTES ON AUSTRALIAN CARABIDiE, V., 



The longipeiine-group. 

 Ligula convex, smooth ; paraglossae corneous. Maxillae with 

 inner lobe densely setose on upper side and apex, not triangu- 

 larly prominent at middle of inner side. Palpi not long and 

 bowed ; apical joint of labial three-fourths length of penulti- 

 mate ; two apical joints of maxillary subequal. Mentum with 

 lobes very long and sharply pointed. Prothorax with anterior 

 angles more prominent than median part of apex ; disc nitid 

 and impunctate in middle. Elytra with interstices biseriately 

 punctate, sometimes tending to become triseriately punctate 

 towards apex. Middle trochanters with a triangular promin- 

 ence on lower side. 



GiGADEMA LONGIPENNE Germar. 



Htlliio longipennis Germar, Linn. Ent., 1848, iii., 162- 

 Gigadema longi'penne Gestro, Ann. Mus. Civ. Genova, 1875, 

 vii.j 876 : G. polihihim Macleay, Trans. Ent. Soc. N. S. Wales, 

 1871, ii., 83. 



G. longi'penne Germ., is found in South Australia, New 

 South Wales, Queensland, and North-West Australia. It is 

 well known, and is differentiated from all the other species of 

 Gigadema by the group-characters given above. G. politulum 

 MacL, is conspecific with G. longipenne ; I have examined 

 Macleay's type in the Australian Museum, Sydney. 



Neohelluo, n.gen. 



Depressed, winged. Head wide across neck; eyes hemispherical, 

 prominent, lightly enclosed behind in small truncate orbits; one 

 supraorbital sensitive hair on each side. Antennae narrow, lightly 

 compressed; four basal joints cylindrical. Clypeus wide, truncate, 

 one sensitive hair at each side. Labrum truncate, one sensitive 

 hair near each anterior angle. Mentum deeply emarginate; sinus 

 edentate, oblique on sides; lobes triangular, pointed. Ligula wide, 

 fringed with long setse; apex prominent in middle; outer surface 

 with four setae distant from apex; inner surface plurisetose; para- 

 glossae rudimentary, cartilaginous. Labial palpi long; penultimate 

 joint long, narrow ; apical joint three-fourths length of penul- 



