126 BAlH WHITE BUTTERFLY. 



the base. The antennae are whitish, variegated with 

 black. 



The caterpillar frequents the different species of 

 Brassica ; also wild Mignonette (Reseda lutea), 

 Thlaspi arvense^ and other cruciferous plants. It 

 is of a dull blue, according to Godart's description, 

 bordered with yellow, and covered with black points ; 

 the head clear green, with yellow spots and black 

 points. The chrysalis is at first greenish, but af- 

 terwards becomes grey. 



Although recorded from a remote period as a na- 

 tive of Britain, this insect still continues to be classed 

 among our rarest kinds. It is noticed by Ray as 

 having been found near Cambridge : it has likewise 

 occurred at Hampstead in Middlesex, and in the 

 neighbourhood of Bristol. More recently it has 

 been taken, both by Mr Stephens and Mr Le 

 Plastrier of Ramsgate, in the meadow under Dover 

 Castle, in the month of August. We are told by 

 Lewin, that it was named the Bath White, from a 

 piece of needlework, executed at Bath by a young 

 lady, from a specimen of this insect, said to be taken 

 near that place. 



