210 
BUTTERFLY. 
the head with a pair of short tentacula of a red 
colour, which it occasionally protrudes from that 
part. In the month of July it changes into a 
yellowish-grey angular chrysalis, affixed to some 
convenient part of the plant, or other neighbour- 
ing substance, and from this chrysalis in the month 
of August proceeds the complete insect. It some- 
times happens that two broods of this butterfly 
are produced in the same summer, viz. the first in 
May, having lain all winter in the chrysalis state, 
and the second in August, from the chrysalides of 
July. 
Of the division called Heliconii the beautiful 
insect the Papilio Apollo is an example. It is a 
native of many parts of Europe, but has not yet 
been observed in our own country, and is some- 
what larger than the common great cabbage- 
butterfly; of a white colour, with a slight semi- 
transparency towards the tips of the wings, which 
are decorated with velvet-black spots, and on each 
of the lower wings are two most beautiful ocel- 
lated spots consisting of a carmine-coloured circle 
with a white centre and black exterior border. 
The caterpillar is black, with small red spots, and 
a pair of short retractile tentacula in front: it 
feeds on Orpine and some other succulent plants, 
and changes into a brown chrysalis, covered with 
a kind of glaucous or violet-coloured powder. 
P. Piera has semitransparent wings, with the 
lower pair marked by two ocellated black spots 
with a yellow ring and centre. It is a native of 
South-America. 
