The white-ants

1637. The white-ants are fortunately not to be enumerated among the destructive insects of our own country, but the injuries they commit upon the wooden erections and other wood-work in tropical regions is very extensive. The dragon-flies must be considered as insects beneficial to mankind, from the vast number of other insects which they destroy; and the same may be said with respect to the ant-lion and aphis-lion flies, the larvï¾µ of which consume vast numbers of ants and aphides.