456 ON carabidjE from west Australia, 



Table of Genera. 



A, Eyes widely separated from mouth beneath. 



B. Elytra fully striate. (Penultimate joint of 

 labial palpi with more than two seta3 in front). 

 C. Posterior tarsi long (joints usually linear); first \ 



joint as long as or longer than two succeeding I Gnathaphanus. 



joints together J Diaphoromekus. 



CO. Posterior tarsi short; joints short and incras- 

 sate to apex, apical angles with long spinous 

 setse, first joint not, or very little, longer 

 than second (never as long as two succeed- 

 ing together). 



) Phorticosomus. 

 D. binus of mentum with a median tooth 



Htpharpax. 



DD. Sinus of mentum edentate Cenogmus. 



BB. Elytra with eighth stria obsolete on sides. 



E. Form stout, convex; size moderate Harplaner. 



EE. Form narrow, depressed; size small Thenarotidius, 



AA. Eyes very close to buccal fissure beneath, (Pen- 

 ultimate joint of laViial palpi with two sette in 

 front). 



F. Mandibles hardly projecting beyond 

 labrum, not decussating. 

 G. Elytra with strias obsolete on sides, 



eighth not impressed on sides Notophilus. 



GG. Elytra fully striate (eighth impressed 



for whole length) Stenolophus. 



FF. Mandibles projecting beyond labrum, 

 acute, decussating; front obliquely 

 biimpressed. 

 H. Posterior tarsi with joints narrow, 

 first joint longer than two suc- 

 ceeding together. 



I. Form stout Lecanomerus. 



II. Form narrow Thenarotes. 



HH. Posterior tarsi with joints short 



and with long spinous setffi at 

 ( apical angles, first joint shorter 

 tlian two succeeding together. 

 ((? with a longitudinal fovea in 

 middle of second ventral seg- 

 ment) EUTHENARUS. 



