PAPILIO III., IV., V. 
and two sub-dorsals behind of same size, each of the last with lilac spot; on 9 to 
12 are two sub-dorsal lilac spots; head as at last previous stage. In a few hours 
the patch is tinted with red. (Fig. d, III.) Duration of this stage about four 
days. 
After third moult: length at twelve hours .6 to .62 inch; anterior segments 
thickened ; color in most cases dark brown, more or less mottled with lighter 
brown, the segments after 8 darkest; others have the anterior segments green, 
more or less soiled with brown, the posterior as first described ; and others still 
are clear green anteriorly, the last segments brown mottled with green, espe¬ 
cially on dorsum, the lower part of side whitish-green; the patch salmon, and 
extending nearly to base, but in some examples the red is overlaid, especially on 
dorsum, with pale green; 2 has the front ridge arched as before, the processes 
reduced; on 4 now appears a sub-oval greenish-yellow patch, the larger end 
outward, edged by a fine black line ; inside, a heavy black ring, with an inner 
spot of lilac, and on dorsal side of the ring a black bar; next the patch is a 
sub-dorsal lilac spot, rounded or quadrangular, often disconnected (as in lower 
Fig. Jr, XIII.); at this period these patches are separated across dorsum by a 
space varying from .12 to .15 inch (these are the extremes in 37 examples); on 
5 are four equal lilac spots in line across posterior edge, two sub-dorsal, two 
lateral; 9, 10, 11 have each four such spots; some larvse have a pair of minute 
sub-dorsals on 12, others have four also on 7, and none on dorsum of 8 ; from 6 
to 12 a lilac spot on each segment, below spiracles ; at either end of the ridge 
on 13 a low cone, and traces of a similar pair on 12, scarcely more than a slight 
elevation of the skin; head brown, pink tinted. (Fig. dr, III., Ji, Jr, XIII.) As 
the stage progresses, the greener larvae become uni-colored, and the darker 
become more green, but in the latter more or less brown remains to the end ; 
in some cases the salmon patch becomes wholly changed to green and is lost, 
in others its position is indicated by a paler shade of green, and often a little 
salmon at the edges on dorsum ; the posterior edge of 5 becomes yellowish, 
and on the front of 6 is a black transverse band, concealed when the larva is 
at rest. (Fig. e, III.) Duration of this stage four to seven days. 
After fourth moult: at twelve hours from .9 to .95 inch ; color invariably 
green, no matter what was the hue before the moult, the patch almost always 
wholly suppressed, but occasionally traces of it can be seen in an indistinct salmon 
spot on either side of dorsum. In five or six days is fully grown. 
Mature Larva. — Length, 1.5 to 1.8 inch; cylindrical; thickest at 4, 5, 
sloping on back and sides to 13, and rapidly to 2 ; color, yellow-green, velvety, 
shading on the sides into whitish-green ; under side white; legs and pro-legs 
