148 Mr. R. C. L. Perkins on the Generic characters, etc. 



scurely raised. Facets of eyes very coarse or finer, 

 variable according to species. 

 Me-sotliorax with a very shallow median impression an- 

 teriorly, the sculpture of the front part dense, consisting 

 of very feebly impressed, indistinct punctures, the 

 surface dull, posteriorly sometimes more definitely 

 punctate. Propodeum in front with minute granulate 

 sculpture under a strong lens rather than punctured, 

 generally with some fine longitudinal wrinkles or 

 irregular ones, sometimes very short, rarely wanting. 

 $ with the anterior femora, trochanters and tarsi 

 simple ; the 6th joint of the antenn;i3 very slightly 

 or strongly pi'oduced at the apex according to the 

 species. 

 Xenvcrahro, gen. nov. (Type Gruhru unicolor, Smith.) 



