488 ON CARABID^E FROM WEST AUSTRALIA, 



Lacordairia is a genus of the Licinini; I have identified L. 

 proxima^ Casteln., from named specimens in the Howitt Collec- 

 tion, and regard it as typical of the genus. 



Platylytro7i is evidently a member of this tribe; the absence of 

 an internal plica interrupting the margin of the elytra posteriorly 

 would in itself prevent its coming into the Panagfeini, to which 

 tribe Sir William Macleay referred it. 



Table of Genera. 



A. Mentum joining gulre without support at base. 



B. Antennse with two basal joints glabrous Lestignathus. 



BB. Antennee with three basal joints glabrous. 

 C. Metasternal episterna quadrate (short). 

 . D. Labrum deeply excised, prosternum not mar- 

 gined at base Lacordairia. 



DD. Labrum short, sinuate-emarginate ; proster- 

 num margined at base SlAGONYX. 



CC. Metasternal episterna decidedly longer than 

 broad. 

 E. Apical curve of elytra sinuate on each side... Hormacrus. 

 EE. Apical curve of elytra without a sinuosity 

 on each side. 

 F. Size large, fourth joint of antennaj shorter 



than third and fifth Plattlytron. 



FF. Size small, fourth joint of antennse a little 



longer than third Microferonia. 



AA. Mentum supported at base by a submentum. 



G. Labial palpi with penultimate joint 

 bisetose in fi-ont, right mandible with 

 upper side raised into a prominence at 



base (preceded by a deep notch) Physole.sthus. 



GG. Labial palpi with penultimate joiut 

 plurisetose in front, right mandible 

 ordinary Dicrochile. 



Hormacrus, n.gen. 



Head long, narrow, convex; clypeus emarginate, not covering 

 basal membrane of labrum in middle, a setigerous puncture on 

 each side. 



Eyes distant from buccal fissure. 



