BY THE REV. T. BLACKBURN. 65 



J. Prothorax very evenly nar- 

 lowed forward from its 



base simiHs, Blackl). 



JJ. Prothorax not much nar- 

 rowed forward in its basal 

 half "^Leai^ Blackb. 



TI. Interstices convex and im- 



punctulate longiusculus, Blackb. 



HH. Seriate punctures of elytia 

 large foveae (less than 2 in 

 a length equal to the width 



of the adjacent interstice) cylindricus, Blackb. 

 FF. Width of prothorax in front 



fully I of its width at the base Bovilli, Blackb. 

 EE. Prothorax nearly parallel-sided in 

 the hinder half. 

 F. Prothorax not wider in the middle i^^ 



than at the base. 

 G. Prothorax evenly punctulate. 

 H. Interstices of elytra very finely '^^ 



punctured. 



I. Pjothorax extremely convex, 



closely punctured colossus, Blackb. 



II. Prothorax. much less convex, 



sparsely punctured palmerensis, Blackb. 



HH. Interstices of elytra excep- 

 tionally coarsely punctured imperialis, Blackb. 

 GG. Prothorax very unevenly punc- 

 tulate (i.e., large impunctu- 



late spaces) longulus, Blackb. 



FF. Prothorax notably wider at the 



middle than at the base laticollis, Blackb. 



* This species has faint traces of ocular sulci. 

 5 



