Pl.ATK XXX IX. 





Pairing-chambers, egg-galleries, and larval galleries ot 'I'mnicits ribbentropi^ Stub., on 

 ner surface of living spruce bark. This shmxs the manner in which the female Ijeetles tunnel 

 it their egg-galleries, and the method of feeding of the grubs which hatch from the eggs laid 

 the sides of the egg-gallery. North-West Himalaya. 



