1872.) 259 
suspend themselves to the under-sides of the leaves, and to the sides of 
their glass cage, and on the 27th, they had all assumed the pupa state. 
The perfect insects, of an unusual depth and richness of colour, and of 
maximum size, emerged from the 27th to 380th June. 
The full-grown larva is about 1 inch in length, and moderately 
stout; viewed sideways, it is of about uniform bulk throughout, viewed 
from above, it is seen to taper slightly just towards each extremity: the 
head is indented on the crown, is widest at the sides near the mouth, 
and rather flattened in front; the body is thickly covered with obtuse, 
conical spines, to the number of one hundred and thirteen, as follows: 
the segments from-the fifth to the eleventh, both inclusive, bear each 
eleven spines, arranged in a single transverse row on the back and 
sides ; or, if they are regarded longitudinally and collectively, then we 
may say that on segments 5—11 there are eleven row of spines, viz., 
the dorsal, and, on each side, the sub-dorsal, supra-spiracular, sub- 
spiracular, lateral, and sub-lateral: the other segments have, as usual, 
a different arrangement ; the second segment bears but two spines on 
each side, which are in line with the lateral and sub-lateral rows; the 
third segment has ten spines, the dorsal one only beiog absent; the 
fourth segment has eight spines, the lateral as well as the dorsal being 
absent; the twelfth segment bears ten spines, the single dorsal being 
here replaced by a pair, ¢. e., one in front, the other at the hind part of 
the segment, whilst the lateral pair are absent ; the thirteenth segment 
has but four spines, which stand two on each side, in line witli the supra- 
spiracular row of the rest ; of all these spines, those in the two lowest 
rows are the most slender and smallest, and those in the sub-dorsal are 
rather the largest. 
The ground colour of the back is black, becoming gradually 
blackish-olive on the sides; the belly olive-brown, the anal flap, and 
also the segmental divisions, olive ; all the skin is thickly covered with 
whitish spots, that are very slightly raised, with a tessellated appearance, 
except that a dorsal stripe of the black ground is left ; the spots on the 
back are somewhat transversely oblong, but rather irregular in shape, 
and are disposed partly in three transverse rows between the spines of 
one segment and-those of the next, and partly round the bases of the 
spines ; on the sides, the spots are rounder and smaller, and are chiefly 
congregated round the spines and spiracles; there is a lateral series of 
three large irregular spots on each segment beneath the spiracles, which 
almost forms a broadish longitudinal stripe. The head is black, with a 
transverse whitish stripe just above the mouth, and a group of whitish 
ne 
Oy a i oe 
