214 The Philippine Journal of Science 1921 
After second molt.—The black dorsal area becomes yellow, and the lat- 
eral yellow becomes black; the tubercles which have greatly increased in 
length are arranged as follows: Segments 1 and 12, four tubercles each; 
segments 2 and 11, six tubercles each; segment 3, two dorsal tubercles; 
segment 11, one dorsal tubercle; below the spiracles on segments 2 and 11 
the tubercles are blue, each emitting four or five black spines. 
After third molt—The whole body becomes pale yellowish green and 
occasionally there is a black lateral stripe. 
After fourth molt.—There is no change whatever. 
After fifth molt.—The larva loses all the long spined tubercles, with the 
exception of the two dorsal tubercles on segment 3 and the one dorsal tuber- 
cle on segment 11. At this stage the larva, when alarmed at any thing, 
makes a noise something like the sound of “cht.” 
After sixth molt—When full grown the larva is greenish yellow; 
ventrum bluish green; a subspiracular stripe above which there is on each 
segment one small blue tubercle; two longer dorsal tubercles on segment 
3, the mediodorsal shorter tubercle on segment 11 still remains; the poste- 
rior margin of all segments paler in color; on the dorsum and body there 
are minute warts. When full grown it spins a green cocoon the upper 
end of which has a hole which seems as if it had been cut out in a circle; 
the cocoon is suspended by a thread attached to its upper angle and hangs 
down from the branch. The larva emerges from the ovum in April and 
feeds on nara, [dwarf oak (Quercus glandulifera Blume)]; kunugi, [dwarf 
oak (Quercus serrata Thunb.)]; kuri, [chestnut (Castanea vulgaris Lam. 
var. japonica DC.)]; kashi [Quercus acuta Thunb.]. 
It pupates at the end of June or beginning of July, and the imago 
emerges in October or November. The female deposits its eggs on the 
twigs of the tree or on the cocoon and they hatch in April as previously 
stated. The imago is single-brooded. 
The larva as figured by Nawa measures about 87 millimeters. 
According to Matsumura it also feeds on keyaki (Zelkowa acu- 
' minata Lindl.) and kashiwa (Quercus dentata Thunb.). Pryer 
gives cherry and other trees. Jordan gives Phellodendron 
which, if it be the same as the Japanese species (Phellodendron 
amurense Rupr.), is called kiwada. 
The following description of the larva is taken from my 
original figures: 
After fourth ? molt.—Plate 1, fig. 6; figured, May 29. 
Length, 54 millimeters. Head light green; body apple green; 
ventrum, all legs, prolegs, and claspers darker green, speckled 
with minute yellowish spots; spiracles brownish; a yellowish 
white, subspiracular line; paired, spinous, dorsal tubercles on 
segments 2 to 13, those on segment 2 (next to the head) being 
blue; the tubercles on segments 4 and 12 are longer and more 
prominent than the rest; a spined, midlateral, blue tubercle on 
segment 2; a series of subspiracular, spined, blue tubercles on 
