68 PE ACT B. AOCVIE 
; + 
T am not certain whether in the larya ftate it feeds on the Convol~ 
vulus, although hi found it on a plant of that kind; as its climbing 
ftalks and tendrils were fo intricated with branches of white-thorn, 
oak, and broom, as to prepipde any accurate determination. 
I kept them ina gauze cage for the {pace of a fortnight, and fup- 
plied them with’ fretls portions of the different plants every day, but 
could never obferve them take the leaft fubfiftence during the whole 
time; they affixed their tails and hinder legs in the mefhes of the 
gauze when I firft removed them into the cage, and never fhewed 
the leaf figns of life after; as they held firmly by the gauze, in the 
pofitions reprefented in our plate, I was very much difappointed to find 
on attempting to remove them, that twowere dead; May 23d I obferved 
that which'was alive threw out avery delicate white thread, as if about 
to fpin a cone; the body gradually fhrivelled at the upper part, while . 
the lower became proportionably thicker ; two days after it fell to the 
bottom of the cage and became a pupa, at firft of a whitith, and after 
of. a fine green colour, marked at the narrow end with howe black 
freaks. 1 ie 13th the Moth came forth. 
At Fig. I I. is fhewn the head of the Caterpillar magnified ; it is 
. grey, with the jaws black, and is concealed beneath two horns or pro 
jections of the fame green colour as the back. 
PLATE 
