169 



F. Clypeus and frons form an 

 almost continuous surface 



almost on one plane 



FF. Clypeus and frons very 

 distinct; the latter sepa- 

 rately convex 



DD. Hind claws feebly bifid, apical 

 process much longer than hinder 



process 



OC. Middle lobe of trilobed outline 

 much wider. 

 D. Prothorax fully twice as wide as 

 long. 

 E. Trilobed . outline strongly 



divided 



EE. Trilobed outline not or 

 scarcely divided. 

 F. Punctures of elytra very 

 fine and close (20 from 

 suture not passing middle) 

 FF. Punctures of elytra not- 

 ably less fine and close (20 

 from suture pass middle 

 strongly). 

 G. Front tibia? with only two 



external teeth 



GG. Front tibiae with three 

 external teeth. 

 H. Clypeal suture strongly 

 angular ; size moderate 



(about 3| 1.) 



HH. Clypeal suture gently 

 arched ; size very 

 small (about %\ 1.) 

 DD. Prothorax distinctly less than 

 twice as wide as long. 

 E. Clypeus and frons almost form 

 a continuous plane ; frons 

 coarsely punctured. 

 F. Clypeus projects laterally 

 on either side beyond out- 

 line of eye 



FF. Clypeus not projecting be- 

 yond outline of eye 



EE. Planes of clypeus and frons 

 very different; frons strongly 

 convex, not coarsely punc- 

 tured. 

 F. Elytra non-striate, nitid ... 

 FF. Elytra conspicuously stri- 

 ate, subopaque 



BB. Hind coxae considerably shorter 

 than metasternum (a wide strip of 

 1st ventral segment exposed). 

 C. Lateral margin of pronotum con- 

 spicuously expanded (and its 

 raised edging accentuated) close 

 to front angles. 



Darwini, Blackb. 

 sequens, Blackb. 

 ignobilis, Blacltb. 



rhinoceros, Blackb. 

 bidentatus, Blackb. 



infirmus, Blackb. 



viduus, Blackb. 

 pauxillus, Blackb. 



incola, Blackb. 

 neglectus, Blackb. 



modestus, Blackb. 

 aridus, Blackb. 



