596 REVISIONAL NOTES ON AUSTRALIAN CARABID^, V 



14(11). Pronotum with apex roundly produced over head, much more pro- 

 minent than anterior angles in both sexes; posterior trochanters 

 sharply pointed at apex G. grande Macl. 



15(8). Labial palpi with apical joint short, not one-half length of penulti- 

 mate, this unusually long, bowed, and with lower apical angle 

 prominent. (Neither gula nor maxilla armed in male). 



16(19). 6 .Right mandible simple. 



17(18). Head with decided postocular prominences; pronotum with middle 

 of anterior margin slightly more advanced than anterior angles... 



. ,..G. obscuriLm S). 



18(17). Head without postocular prominences; pronotum with middle of 



anterior margin not more prominent than anterior angles 



G. node Newm. 



19(16). S .Right mandible with a notch on inner side near apex. 



20(21). Elytra with interstices biseriately punctate G. bostocki Cast. 



21(20). Elytra with second, fourth, and sixth interstices more or less con- 

 fusedly punctate towards apex G. mandihidare Blkb. 



22(l).Ligula convex, glabrous; inner lobe of maxillffi not protuberant in 

 middle of inner side G. lo7igiperme Germ. 



The sulcafiuji -grouip. 

 Mandibles short. Paraglossae cartilaginous. Maxillae with 

 inner lobe moderately setose on upper surface, triangularly- 

 prominent at middle of inner side. Palpi short; penultimate 

 joint of maxillary shorter than apical. Prothorax with disc 

 wholly punctate. Male without unusual secondary sexual 

 characters. Gestro has suggested that a distinct name, Peni- 

 chrodema, should be used for this group, but I have not 

 adopted his suggestion. Habits terrestrial. 



GiGADEMA FROGGATTi Macleay. 



Proc. Linn. Soc. N.S.Wales, (2), iii., 1888, 449. 



This species is distinguished from G. sulcatum Macl., by 

 smaller size ; prothorax narrower, more strongly sinuate to 

 base ; elytra with even interstices more densely punctate. 

 Length 17 mm. 



TIah. — Queensland: Cooktown (Olive). I have two speci- 

 mens (cf) from Mr. Olive, of Cooktown, which I have com- 

 pared with the types of G. froggatti Macl., in the Macleay 

 Museum, and have considered identical. It requires studying 

 with more material than I possess. 



