The moth deposits the egg generally in the blossom 

 end of the fruit (A, Fig. 2), but sometimes on any part 

 (the latter especially late in the season). The eggs are 

 attached to the fruit by a pasty substance. It is our 

 opinion that at the time the egg is deposited the skin 01 

 the fruit is punctured, making easy entrance for the 

 larva. It is rare to find more than one egg on any 

 apple, pear, or quince, or more than one larva. 



The larva is hatched in from nine to twelve days, and 

 begins to eat eagerly and burrow towards the carpellary 

 ovarium, or core containing the seeds (B, Fig. 2). 



The larva when hatched can scarcely be seen with 

 the naked eye ; at six days, measures nearly one quarter 

 of an inch in length, about as thick as fine silk thread, 

 (ist), first signs of excrement at burrow (D, Fig. 2) ; at 

 ten days, three eighths of an inch, and about as thick 

 as No. 20 wire (E, Fig. 2). It has burrowed by this 

 time about three fourths of the distance to the seed 

 bag of fruit (B, Fig. 2) ; at twenty days, .nearly full 

 natural size (c, Fig. i), and often as large as e, Fig. i. 



When the larva is ready to assume the pupa or chrysalis 

 form, it leaves the fruit by gnawing a hole through the 

 pericarp (D, Fig. 2). Nature has supplied it with a 

 spinneret, the opening apparently in the lower lip, from 

 which issues a viscid fluid in a fine stream, and hardens 

 into silk on contact with the air. By this means it 

 lowers itself to the ground or intervening branches. If 

 it reaches the ground, it immediately crawls toward the 

 tree, and on its journey can often be seen as e, Fig. i. 

 On reaching the tree, it searches for a nesting place 

 under the loose bark in the crotches, or any cavity it can 

 find. If it comes in contact with a branch when leaving 

 fruit, it generally crawls toward the crotches, or until it 

 reaches a hiding place. If under the loose bark it com- 

 mences building an oval shaped wall, about one six- 

 teenth of an inch high, composed of the viscid fluid 

 from spinneret, and sometimes mixed with pieces gnawed 



