HAZEL CATERPILLARS. 639 
Supra-anal plate very short and broad, rough on the surface, with four fine terminal 
hairs. Prothoracic segment edged in front with bright yellow, succeeded by five 
yellow transverse interrupted lines, consisting of two transverse elongated dorsal 
spots and two placed obliquely on the side. A broken yellow line on the side of the 
prothoracic segment. 
Larva after another molt— Length, 24 to 25 mm . Body as before, but deep lilac. 
After final molt. — With the same markings ; pale lilac, with the head very large, 
rounded, and much wider than the body. Length, 35 mm . 
7. Nepticula corylifoliella Clem. 
The larva makes a long, winding, narrow track in the leaves of 
hazel in the latter part of July and the beginning of August, and the 
fall brood may be found early in October. The frass or excrement of 
the larva is deposited along the middle of the track, forming a minute 
central black line. The edges of the mine are smooth and but little 
broader throughout its extent than the width of the miner. The 
mine is left transparent by the larva from the beginning to the end. 
There is another miner in this leaf that I suspect to be a Dipteron. It 
makes a rather broad, tortuous track, much broader than the preced- 
ing, and the " frass" is scattered in separated grains along the middle 
of the track. 
8. Coleophora corylifoliella Clem. 
The larva mines the leaves of hazel in September and October. The 
case is three lines long, dark brown, irregularly cylindrical, compressed 
or flattened at its hinder end, with two teeth about the middle of the 
upper edge, separated from each other about one-third of the length of the 
case, and dilated somewhat or rounded on the lower edge between the 
teeth. Mouth of case not deflected. The mine of the larva is nearly 
circular. 
Larva. — It is pale brown with dark brown thoracic, dorsal spots. 
9. Depre88aria grotella Robinson. 
The caterpillar lives on the hazel in Illinois, " in a leaf rolled from 
the apex toward the base, or in a nest formed by fastening several 
leaves together with silken threads." Of two found May 27, one 
pupated June 7, and the moth issued June 28 ; another pupated June 
20 and the moth issued July 9. 
Larva. — Body green, darkest dorsally; cervical shield green, unmarked, head 
green, with a black dot on each side above the jaws, and sometimes with one or two • 
black spots on each side near the top. Length, 17 mm . (Coquillett, Papilio, iii, p. 98.) 
10. Gelechia tristrigella Walsingham. 
The caterpillar of this moth lives on the hazel in a tube formed by 
Tolling a leaf from the apex toward the base, the tube being closed 
at each end, as if done by pinching the upper and lower part of the 
tube together with the thumb and finger. The excrements of the larva 
are retained in the tube, and when about to pupate the larva crawls into 
this excrementitious mass and forms an oblong cavity, which it lines 
