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THE BRIMSTONE BUTTERFLY. 
Papilio Rhamni. 
PLATE XXVII. 
Papilio Rhamni, Linn, Syst. Nat. ii. 765, No. 106.— 
Donovan's Brit. Ins. pl. 145.—Gonepteryx Rhamni, Lat. 
THE wings are angulated, sharp at the dimidiate 
margin; the colour, a bright sulphur yellow, with 
a small crimson spot in the centre of each ; the head 
and antennee deep crimson, the eyes and body 
bluish gray; the under side pale yellow, the ex- 
terior margin being of a deeper colour, with equi- 
distant small spots of pink ; centre of the wings, 
with pale crimson spots. 
The Brimstone Butterfly is common in many 
places in the month of June. In its caterpillar state, 
it is very seldom taken ; and when in the chrysalis 
condition, it is generally so concealed among the 
herbage, that it is almost impossible to be discovered, 
from its green colour according so well with the sur- 
rounding leaves. In this state it is suspended by the 
tail; but has such muscular strength, that if touched, 
it can throw itself upright immediately, in the same 
manner as the pupa of the Phalena pentadactyla. 
The caterpillar feeds chiefly on buckthorn, whence 
it has received the specific name of Rhamni. 
The male alone is of a vivid yellow. The female 
is of a dull greenish white. 
