371 



larvæ acts against the upperside of mentum and subraentum 

 in the same half of the head, we find that the direct line 

 between the dorsal articulation of the mandible and the 

 anterior border of the mentum very nearly has the same 

 length as the line cr. Of other correlative details of struc- 

 ture, it may at last be mentioned that the superior border 

 of the stipes of the maxilla mostly lies outside the interval 

 between the retinacle and the point of the mandible {long 

 stipes in Pterostichus, short and broad in Carabus). 



