AN AMERICAN CERAPACHYS. 



i8 7 



ditions of the pedicel in the taxonomy of ants, so that we should 

 not emphasize the Ponerine-like petiole and postpetiole of the 

 Cerapachyinaj, especially as all sorts of pedicels are found among 

 the different genera of this group from that of Acantlwstichns, 

 which is like Amblyopone, to that of Oocercea, which recalls the 

 conditions seen in the Myrmicinae. The larvae of the Cera- 



FlG. 4. a, Acanthostichus qu. drat its, 9 ; /', head of same from front ; c, large 

 worker (same magnification as a) ; </, Acanthostichus fuscipennis, $ . After Emery. 



pachyinae are unknown, but as non-tuberculate larvae, somewhat 

 . resembling those of Eciton, occur in some distinctively Ponerine 

 genera (Stiginatounna and Ectatoniuni] it is probable that the 

 larval characters would have little weight in solving the problem 

 under consideration. 



