524 Notes in 1887 upon lepidopterous larve, cc. 
former division, had the dark shade more or less marked 
on the claspers. 
The transparent zone on the caudal horn was 
especially distinct in this division and in the lightest 
larve of the other division. 
The larve were now (Sept. 20th) re-arranged in two 
new divisions, according to the presence of dark pigment 
in this stage. There was an obvious contrast between 
the seven darkest larve of the first division and all the 
others: the new division of ten light larve was of course 
constituted by adding the four palest of the old first 
division to the old second division. 
On September 21st I observed the presence of a row of 
brown spots on each side of the larva in the light division, 
which possessed traces of the prothoracic darkening. 
There was a spot on each of the abdominal segments, 
1—7 (inclusive), situated just above the spiracle and 
below the lower margin of the subdorsal line. This 
marking could not have belonged to the next stage, as 1 
thought at first, for the larva was still feeding, and con- 
tinued to feed for two days. 
On Sept. 22nd the subdorsal line became much more 
distinct on all the largest larve. It had also become 
very broad by extending upwards, being thus gradually 
transitional into the broad green dorsal band. Its lower 
margin remaining sharply defined, it follows that the 
ground colour of the body is somewhat sharply divided 
into a dorsal and ventral shade. The brown-spotted 
larva was carefully examined: it had a dusky tinge in 
the region of the ocelli, from which a faint cloud 
extended up the side of the head: there was a fair 
amount of dark pigment on the thoracie legs, which 
became red towards their extremities, on the claspers, 
and below, and (by this time) upon the anal flap. The 
seventh white stripe which terminates upwards at the 
base of the caudal horn could now be just made out in 
its upper part, in this and most of the other larve. 
This stripe was always the first to become conspicuous 
in S. ligustri and in Smerinthus. An excessively faint 
brown border to this stripe was continued downwards 
and forwards from the seventh brown spot. Similar 
indistinct borders extended from the 4th,-5th, and 6th 
spots, but the stripes themselves could not be seen. The 
homology between these spots and those described upon 
