534 Notes in 1887 upon lepidopterous larve, cc. 
the shagreen dots, which were omitted from all the other 
figures of this stage. The distribution and amount of 
the dark markings is sufficiently indicated in the figures. 
The easy transition from the degree of darkness indicated 
in fig. 12 (the 8th larva of the last division), to that 
shown in fig. 13 is very clear. The larger scale of fig. 
14 has permitted the representation of two of the chief 
tubercles, which are quite distinct upon most of the 
segments. These have the appearance of black points, 
one above and one below each spiracle except the last, 
in which one is above and one behind. The hairs 
which spring from them are long. The shagreen tubercles 
are generally darker on the dark parts of the larva, e.g. 
the horn. 
The head is very black, and its green ground colour has 
become dark, while the black markings have extended 
greatly. Its appearance from the front is seen in fig. 
15, x 9. The area above the subdorsal is now almost 
completely black, the green ground colour being chiefly 
traceable along the median line. 
Although the markings have the effect of black at a 
little distance, and are thus represented in the figures, a 
careful examination in a strong light on Sept. 29th, 
showed that all the dark markings upon the borders and 
above the subdorsal are of a purplish brown colour, but 
of so dark a shade that they appeared to be black. On 
Oct. 2nd, when the larva was in the resting-period before 
ecdysis, this purplish tint had become more distinct, 
and it could now be recognised everywhere except on the 
darkest places,—viz., the horn, upon and below the anal 
flap, and upon the head. At this time there was also a 
prothoracic dorsal plate distinctly demarcated from the 
surrounding surface, like that described in Stage I., and 
shown in fig. 5. This structure also became especially 
distinct in the resting-period of the next stage. In the 
5rd stage the plate was traversed by the subdorsal line, 
and hence became mottled with white upon each side, 
while the plate regained its black colour below the line. 
This appearance only became distinct during the resting- 
period, and is not shown in figs. 13 and 14, which were 
drawn at an earlier period. 
The apparent black marks of the other larve could 
also be resolved into purplish brown tints in a strong 
light, especially towards the end of this stage. 
