572 Mr. Harold Powell on the 
five times as long as the short hairs, are developed from the primary 
head tubercles. The chitinous parts of the feet are jet black, the 
joints and bases dirty whitish yellow. Neck narrow, quite smooth 
and of a light sepia colour. The rest of the prothorax is smooth 
with the exception of the black transversal plate divided by the 
dorsal centre. Each half of this plate extends from the dorsal 
division to the level of the prothoracic spiracle. It is somewhat 
shiny, and bears several stiffish hairs curved forward. The division 
is a narrow, dull white line, continued on the succeeding segments 
as the brownish-black dorsal line. 
The form of the body is similar to that of Carcharodus alceae. 
The body is capable of great extension and contraction. The seg- 
mental incisions are well marked but not very deep. Body tapers 
rather rapidly after abdominal segment 6. Anal flap flattened and 
rounded. The colour of the body is something between sepia and 
coffee colour, darker on the dorsum than beneath. The central 
dorsal line is dark brown, darker than the ground colour, but the 
contrast is not sufficient to make the line very striking or distinct. 
There are signs of two other dark lines between it and the spiracles, 
They are very much suffused. Under the hand lens the dorsum 
appears thickly sprinkled with+dull whitish tubercles bearing light 
brown hairs of different lengths, none being more than about 1°5 mm. 
The white hairs of the food plant are often caught in these hairs. 
On the first two abdominal segments a distinct though narrow, dull 
orange spiracular line is seen. it becomes very faint on the 3rd 
abdominal segment and is hardly distinguishable beyond that. 
No trace of this line on the thoracic segments. The flange 
has a semi-transparent appearance when seen from below, and 
is brownish-orange, rather lighter than the general ground 
colour. 
The roundish-oval chitinous ring of each spiracle is set on a small 
mound of dull brownish orange. The ring itself is light red-brown. 
The bases of the prolegs are slightly darker than the surrounding 
tissue. They are hairy. 
Under microscope x 40 approx., one sees that the numerous 
whitish tubercles covering the upperside of the body resemble to 
some degree those of Pierid larvae. Many of them terminate in a 
shallow cup from the centre of which a hair grows. The edges of 
the cup appear chitinous. Amongst these upstanding tubercles are 
a few considerably larger cups or lenticles set on truncated tubercles. 
_Judging from their position, they may represent the primary 
tubercles; but if this be the case the tubercles have undergone 
considerable modification. These large cups have very neat circular 
borders of brown-black chitin, They look, in fact, somewhat like 
