364 Dr. Wallace on the Ouk-feeding 
tubercles, the dorsal and upper lateral rows being tipped with 
orange-yellow, and furnished with long dark brown spines, but the 
spines which belong to the hump on the third and fourth seg- 
ments are longer, black and curling; the anus is margined with 
blue, and three small black velvety patches still adorn that part; the 
head is light chocolate-brown, and two brown dots stud the collar, 
which is of a pale straw colour; the prolegs are brown, the 
claspers pale green, having an indistinct transverse streak of a 
dark chocolate, and a broader termination of the same colour. 
The dorsal and lateral lines are now nearly suppressed. My 
oldest larva made up for his second moult May 29th, and 
changed June Ist, an interval (since the first moult, May 17th) of 
fifteen days; just before moulting the larva had a glassy, shining 
look ; length 58, inch when contracted and made up for changing ; 
just after moulcing the colour is avivid grass-green, dotted all over 
with minute straw-coloured specks; the spines are now much 
longer, especially on the hump and anterior segments, -3, of an 
inch long; the head and prolegs are pale, but soon acquire a 
brick-dust colour; the collar is green, the dorsal tubercles are 
lemon-yellow; the lateral tubercles are tipped with a faint blue 
dot, the lateral stripe is yellow, it is suppressed on the three 
anterior segments; the spiracles are of a pale reddish-brown, 
the claspers are margined with brick-dust colour; the upper 
anal flap is margined with pale blue, on the lower flaps is a 
triangular patch of a brick-dust colour, margined externally 
with creamy-white ; the length is one inch ; the larvee now begin 
to eat enormously. The third moult took place on the 13th 
June, leaving an interval of twelve days; previous to this 
change the larva was 13 to 1? inches in length; colour grass- 
green, paler on the dorsum, deeper on the sides and belly ; 
head light brown, collar yellowish-brown, the upper four rows of 
tubercles yellow, the two lower ones now tipped with blue; 
the spines } of an inch long. After the third moult the larve in- 
crease greatly in size up to 1# inches, and consume more food; the 
colour is a vivid grass-green, the head is green, the collar is 
tipped and studded with yellow-brown spots; a lateral line of a 
yellow-brown colour, margined superiorly with darker brown, runs 
from the posterior to the fifth segment, all the other lines are 
suppressed ; on the sixth, seventh, and eighth segments the line 
is flecked with a brilliant silver spot, that on the sixth being the 
largest; the upper two rows of tubercles are faintly silvery, the 
lower ones are tipped with blue ; there is a great increase of bulk 
in the third and fourth as compared with the other segments; the 
