THE CANADIAN ENTOMOLOGIST. 



After j st moult. — Stage II: Length 6 mm. Head pale greenish 

 with a few white hairs, ocelli black. Body pale green, dark green 

 interiorly, with a whitish subdorsal line, and a similar subspiracular 

 line. Warts whitish. 



By the 12th some had passed 2nd moult. 



After 2nd moult. — Stage III : Length 8.60-9.40 mm. Head pale 

 horn colour. Body green, darker, especially interiorly, above, yellowish 

 green below. There is now a very broken dorsal line of short white 

 dashes. The warts are conspicuous, being of a shiny white, like glazed 

 china. Setae short and whitish; spiracles very inconspicuous. These larva? 

 are sometimes restless, but do not tend to stray from the food-plant. 

 They constantly spin threads, so that when picked up with a camel's-hair 

 pencil they are sometimes pulled back by the thread. 



While under observation one began to clear away the frass from the 

 maple leaf it was on, picking the pieces up with its jaws and throwing 

 them aside. One mass so thrown consisted of six or more pellets stuck 

 together. 



By the 15th nearly all had passed the 3rd moult. 



After 3rd moult. — Stage IV : Length, at rest, 12 mm; in motion, 

 14.5 mm. Very evenly cylindrical, but with a slight fullness about the 

 1 2th segment. Head very pale green with a few whitish hairs, mouth- 

 parts whitish, ocelli rather inconspicuous. Body green with yellowish 

 shades, especially at the segmental folds. Warts as before. 



The white lines are the same as before, but the subspiracular fold 

 is strongly marked and is yellowish white. There is an indication 

 by white dots of another line between the subspiracular fold and sub- 

 dorsal stripe. The spiracles are small and very inconspicuous. Feet 

 and claspers pale greenish. 



Passing 4th moult 17 th May. 



After 4th moult. — Stage V : Length, at rest, 15.6 mm. Head, 2nd 

 and 13th segments, light green, rest of body yellowish green. Warts and 

 stripes as before, white. Sette pale yellowish, subspiracular fold yellow- 

 ish white, feet and claspers light green. 



On 22nd nine out of fourteen in one jar were found to have passed 

 the 5th moult, and the appearance of the larva is now entirely changed. 



After 5th moult. — Stage VI : Length, at rest, 24 mm.; in motion, 

 28 mm. 



Head pale greenish horn colour mottled with blackish green. Body 



