IVAR TRÂGARDH: SKOGSENTOMOLOGISKA BIDRAG I-—5. 209 
Last summer a larva of an Agrzlus, which in all probability 
is A. betuleti FABR., was found in the cambium of a birch- 
tree by LAGERBERG under circumstances, which render it 
very probable, that its burrows will on cross-sections look 
very much like those of Agromyza; further investigations are 
necessary in order to settle this question. 
