•8 Journal New York Entomological Society. [vol vi. 



Stage V. — Elongate, anterior end rounded, posterior pointed but 

 without a well formed tail. Dorsal space moderate, even, but little 

 arched, lateral broad, subventral moderate. Ridges low tubercular, 

 with distinct dark setae. Skin clear granular, whitish; all very trans- 

 parent, green pigment only in the upper half of lateral space, none in 

 dorsal space which appears darker from the food showing by transpar- 

 ency. A waved subdorsal line, bent inward on the interspaces, free at 

 the ends. Depressed spaces not visible, except faint white rings to 

 represent the lateral ones (4). Length, 3.8-5.8 mm. 



Stage VI — Narrowly elliptical with a pointed tail ; setae short, black, 

 distinct. Pigment in the upper half of lateral space, the rest of the 

 body clear green from the blood, translucent and whitish in the edges. 

 A wavy yellow subdorsal line, free at the ends. Dorsal depressed 

 spaces (1) very faintly indicated by whitish dots, visible centrally only ; 

 lateral (4) as large intersegmental white rings, but probably at least 

 the glands of all the spaces (i)-(8) are present, as drops of moisture 

 were observed in the appropriate position of them all in the larva under 

 observation. Skin granules rather coarse, dense, but not contiguous, 

 the depressed spaces not differentiated. Length, 5.0-8.5 mm. 



Stage VII. — (Plate I, fig. 9, 10). Shape as described. Patches 

 of pigment in the dorsal space surround the rings of depressed spaces 

 (1). Light yellowish green, lateral edge clearer, dorsal space darker. 

 A waved, narrow, yellow, subdorsal line, free at the ends; tail 

 reddish brown above. The absence of pigment in the dorsal space 

 makes it look hollow, though it is really flat. Six of the depressed 

 spaces (1) are visible as white rings, around which more or less light 

 emerald green pigment forms in rings, transverse bands or even 

 filling all of the dorsal space (Plate I, fig. 10.). The subdorsal 

 line is composed of a series of intersegmental, inwardly lunate, joined 

 yellow marks. Lateral space to lower edge of depressed spaces (4) 

 pigmented light green, (4) large pale rings with dark centers. A trace 

 of pale dots along lateral ridge intersegmentally. Tail long, pointed ; 

 setae very small, pale. Skin granules rather large, somewhat irregular, 

 not quite contiguous, at the largest depressed spaces, (1) and (4), less 

 distinctly granular over the slight hollows. A broken white subventral 

 line. Length, 7.1- 13 mm. 



Cocoon and pupa as usual. 



Food-plants. — Linden, witch-hazel, hop-hornbeam, beech, maple, 

 black birch, wild cherry, sour-gum, black oak, chestnut, hickory and 

 Leucotho'e racemosa, have been observed. 



