ix] 
June 24. 
90: 
July 5. 
see ae) 
sue Pale 
ye tees 
Oo'7 
puted 
Cen) 
Third moult. Larve in fourth stage are still 
black ; hairs whitish. Front of head pale green ; 
some show small portions of green colour on body. 
Eighteen larve in fourth stage given to Professor 
Poulton, for the Hope Department. Five others 
were afterwards given to another friend. The 
subsequent history refers only to six specimens 
finally retained by me. 
Fourth moult. In fifth stage the ground-colour is 
generally black; a variable amount of green may 
be present in addition ; in two out of the six the 
green predominates. Tubercles yellow, deepening 
to orange. 
First larva began to spin cocoon. 
Three larvee now spinning. The cocoons are those 
marked 1969 in the exhibit. These three larve are 
black with orange tubercles, one is mottled with a 
little dull green. All the larve have throughout 
been variable, but especially so in the last stage, 
varying from bright green with black rings (like 
S. pavonia) to uniform black. Tubercles orange 
in all. 
A bright green larva with definite black rings, 
began to spin. This cocoon is the one marked 
1443, 
Another larva, resembling the last, now spinning 
(cocoon numbered 1327). The last larva retained 
by me, a specimen with much less green ground- 
colour than the two just noted, also spinning 
to-day (cocoon 1273 in the exhibit). 
“These larve all had a profuse diarrheal discharge before 
spinning ; the discharge was clear and colourless when emitted, 
afterwards becoming brown. A period of quiescence, lasting 
for twenty-four hours or thereabouts, intervened between the 
discharge and spinning. During this period the larvee seemed 
shrunken and looked torpid and unhealthy. The cocoons were 
spun among twigs of the food-plant (whitethorn) with few or 
no leaves, in a glass cylinder resting on a white glazed plate. 
