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 Hdiconii 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. Plera 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. 



