PEACH AND THE PEAR. 287 



yellow, with dark colored thighs, and the hind legs 

 which are dull black with clay colored knees. The 

 wings are convex and rumpled on the upper side, like 

 the wings on saw flies, generally. They are transparent, 

 reflecting prismatic colors, and have a smoky tinge, form- 

 ing a broad band across the middle of the first pair ; 

 the veins are brownish. The body of the female is over 

 one-fifth of an inch long. The male is smaller. These 

 flies appear on the Peninsula in the first very warm 

 weather of May or June. They soon begin to lay their 

 eggs, and in three weeks, have disappeared. Their eggs 

 are placed singly, within small semi-circular incisions 

 through the skin of the leaf, and generally on the lower 

 side of the leaf. These flies are not easily alarmed 

 whilst thus eagaged in laying their eggs. In fourteen 

 days these eggs begin to hatch, and the young slug- 

 worms continue to come forth, from the last of May 

 until about the tenth of July, being influenced in time, 

 somewhat, by the season. If the season is early, the 

 flies deposit their eggs early, and if late, they are late in 

 laying their eggs, hence, the slug worms are late in 

 coming. 



At first the slugs are white, but a slimy matter 

 soon oozes out of their skin and covers their backs with 

 an olive-colored, sticky substanee. The slugs have 

 twenty very short legs, a pair under each segment of the 

 body, except the fourth and the last. They are about 



