THE CANADIAN ENTOMOLOGIST, (Jo 



Stage I. — Small, rather thick and square, not lively, sitting on the 

 back of the leaf near the edge, out straight. Head .2 mm., all translucent 

 whitish, the food green. Hairs single, the primary ones only present ; on 

 the abdomen ii is large and black, alternating, leaning outward on joints 

 7, 9 and 1 1, the other hairs pale, iv very long, v shorter and pale. Hair 

 i is shorter than ii, iv and v are approximate, iv scarcely higher than v. 

 On the thorax ia is small, ib large and black ; iia and iib close together, 

 iia very small; v is long and vi very small. The hairs are fine, not glandu- 

 lar, slightly spinulose. The skin has fine spinules. No feet on joint 7. 



Stage n. — Head .3 mm. wide. All white; body thick, the slender 

 abdominal feet absent on joint 7. Warts in four rows as usual, i and v 

 apparently coalesced completely with ii and iv ; hairs short, bristly, 

 brownish, not numerous ; warts whitish. 



Stage HI. — Head .45 mm. As before, all rather opaque white, no 

 marks. Warts small, the hairs bristly, a few long ones at the ends. Thick, 

 flattened, the feet small. 



Stage IV. — Head .8 mm. Still all translucent whitish, but the 

 appearance is greenish-gray from the food in the alimentary canal. Warts 

 large, round, iv-i-v the largest ; spiracles brown. Hair pale, the short 

 ones brown tipped, smooth, not spinulose. Dorsal vessel greenish. 

 Length at the end of the stage 5 mm . 



Stage V. — Head 1.3 mm. wide, retracted at the apex, white, the 

 mouth brown, a dark gray patch at the apex of each lobe. Three upper 

 rows of warts large, the lower small, the body short and thick. Ground 

 colour translucent white, but shaded around the base of each wart and in 

 irregular dorsal and lateral bands with dark gray ; large warts of cervical 

 shield brown behind. Hair short, bristly, with brown tubercles and tips, 

 a few long pale hairs from the extremities and third wart. The body is 

 mostly dark above the spiracles. Later there is a reddish-brown broken 

 subventral shade which also tints the third wart. Marks all diffuse, the 

 appearance gray-brown, lighter subventrally. 



Cocoon as usual on a twig, triangular and made of bits of bark. 



Food plant Clethra alnifolia. Larvae found in all the swamp lands 

 of Long Island that were searched, Brookhaven, Southhaven, Quogue, etc. 

 The larvae hide, but may be found on dark, damp mornings. Usually 

 they remain white till the last stage, but a few assumed the brown 

 shading in part in the penultimate stage, some even having brown warts 

 at this time. 



