PLATK XXIII. 



., 



II'. I-'. 1'crrte, photo. 



1'ortion of the trunk of a sal-tree showing the work of the >, r rubs of 

 Hoplocerantbyx </>init< nis, .\C\\n., in the bast and sapwood. Living larvae 

 are seen hi situ in the galleries, (ioalpara, Assam, 1906. 



