THE LINDEN LEAP-ROLLER. 477 



Larva .70 inch in length, on bass wood. — Body much less hairy thaa the full-grown 

 larva; head black, of the usual size; prothoracic segment swollen, reddish amber, 

 with a transverse black thickened spot giving rise to a few long unequal whitish 

 hairs. End of body with two large black spines directed straight out. Body yellow- 

 ish, with pale Japan varnish-brown stripes, the dorso-median one twice as wide as 

 the others. Described from forty specimens. 



The same larvce after molting, .75 inch long. — Body black, as in the full-fed larva. 

 Anal spines much stouter, less acute than before ; the body is more hairy, aud in gen- 

 eral much as in the full-fed larva. By August 28 all had molted and begun to feed. 



Full-fed larra on apple.— Body thick, of very uniform width, smooth, cylindrical, with 

 long white hairs, those on the prothoracic segment and eighth and ninth abdominal 

 segments the longest, being twice as long as the body is thick. The segments are 

 thickened a little behind. Head large, considerably broader than the body, and 

 shining black. Prothoracic shield yellow, with a short black stripe on the lower 

 edge of each side. Body smooth, black, with four greenish-yellow stripes on each 

 side, the stripes being abont oue-third as wide as the black interspace. Beneath, i» 

 a lateral greenish-yellow somewhat interrupted, stripe, and a median fine uninter- 

 rupted greenish filiform line. Abdominal legs and base of thoracic legs livid yellow ; 

 thoracic legs black. A black blotch on the sides of the abdominal legs. Length 1.40 

 inches. Described from seventy-seven specimens." 



6. Pantographa limata Grote. 



In September the caterpillar of this Pyralid rolls the leaves of the 

 bass-wood in a peculiar manner, as observed by Professor Fernald in 

 Maine and by Miss Murtfeldt in Minnesota. As stated by Professor 

 Fernald, they pupate about the middle of October, the moth in confine- 

 ment emerging during the first week in November, but probably in 

 nature hibernating as a pupa under the leaves, and appearing as a moth 

 the succeeding spring. 



The larva cuts the leaf across from near the middle of the side, past 

 the midrib nearly an inch, in the larger leaves. This cut, which is 

 about an eighth of an inch wide, first starts directly across the leaf, then 

 curves gradually towards the apex, then back to. the former direction, 

 so that the entire cut is nearly in the form of the letter S, somewhat 

 straightened out. The part beyond the cut is rolled over so as to form 

 a cone with the apex toward the base of the leaf, and when inclosing a 

 larva both ends are turned in, so as to close the openings. In drawing 

 the parts of the leaf together the larva spins the thread from side to 

 side — from the side of the cone to the surface of the leaf beyond, about 

 forty times in a place before moving to another. The second set of 

 threads, which is from a fourth to a half an inch from the last, frequently 

 draws the parts of the leaf together so much that the thread of other 

 bundles hang in a loop. The larva deposits its excrement within the 



* Datana sp. — This species occurred on the linden at Brunswick, Me., August 26. 

 Its larva is yellowish, the prothoracic segment being entirely yellowish, and the base 

 of all the thoracic and abdominal feet with a large conspicuous yellow area ; four 

 large yellow patches between the four anterior pairs of abdominal and the anal lejia. 

 The eight yellow stripes are rather wider than in D. angusii. 



