24 INSECTS INJURIOUS TO FRUIT. 



the tree, was given to these Curculios at the same time, to test whether they would 

 make any distinction. But none could be observed. All were taken with the 

 same avidity, and each was equally punctured. 



Fig. 10 shows that even the Crab Apple does not escape the Curculio. I have 

 seen the unmistakable crescent-shaped mark of this insect on that most minute of 

 apples, the Currant Crab. 



Figs. 4, 5, 6, 7, and 10, of this Plate give good representations of the mark 

 of the Curculio, where the entire process has been completed, and the egg has been 

 secured. When first made it is not so distinct, but it soon becomes discolored, 

 presenting this brown appearance. There will often be a slight convex elevation 

 over the egg, and a gentle pressure on that spot with the thumb-nail will break it. 

 A very sharp sense of hearing will sometimes detect the snap. 



