226 INSECTS INJURIOUS TO THE QUINCE. 



hole a little larger than is sufficient to admit the egg, and 

 enlarged at the base. Within this receptacle the egg is 

 placed, and hatches there in a few days. The larva does 

 not penetrate to the core, but burrows in the fruit near the 

 surface; it resembles the larva of the plum curculio in ap- 

 pearance, but is somewhat larger, and has a narrow dusky 

 line down the back. In about a month it becomes full 

 grown, when it leaves the fruit through a cylindrical opening 

 and buries itself two or three inches in the ground, where it 

 remains during the autumn, winter, and early spring months 

 Avithout change. It becomes a chrysalis early in May, and 

 assumes the beetle form a few days afterwards. The beetle 

 also feeds on the quince, burying itself completely in the 

 substance of the fruit; it occasionally attacks the pear. 



Where these beetles prove destructive they may be collected 

 by jarring, as recommended for the plum curculio; and care 

 should be taken to destroy all the fruit which falls prema- 

 turely to the irround. 



SUPPLEMENTARY LIST OF INJURIOUS INSECTS WHIOH 

 AFFECT THE QUINCE. 



ATTACKING THE TRUNK. 



The round-headed apple-tree borer. No. 2. 



ATTACKING THE LEAVES. 



The leaf-crumpler, No. 37 ; the tarnished plant-bug. No. 

 71 ; and the pear-tree slug. No. 75. The pear-tree blister- 

 beetle, No. 73, eats both the flowers and the leaves. 



