BY D. W. COQUILLETT. 129 



they commenced to bear. I cat^efully examined about five acres 

 where every bean stalk was more or less infested. The flies 

 deposited their eggs on the outer surface of the main stem, just 

 about the ground. The maggots, on hatching out, burrowed 

 under the epidermis, some working upwards towards the foliage 

 and others under ground towards the roots. As many as thirty 

 or forty pupse and larv?e could be obtained from a large plant 

 when the skin was all discoloured, split, and rusty red, the plant 

 soon dying from the injuries. This pest had not been noticed 

 before by any of the gardeners, though several of them have 

 been growing French beans on the same land for the last five 

 years.— W.W.F. 



