104 cloudp:d yellow butterfly. 



of each. The hinder wings are likewise margined 

 with black, the ground colour slightly mixed with 

 green, and there is on each a round discoidal spot of 

 deep yellow. On the under side, the upper wings 

 are pale tawny on tlie disk, and greenish at the ex- 

 tremity, with a central black spot, and an obsolete 

 series of blackish spots parallel with the outer edge : 

 the under wings greenish, with a central silvery ocel- 

 lus, having another small one adjoining, and a curved 

 row of faint rust-coloured dots posteriorly. The 

 body is yellowish-green, dusky on the back : the 

 antennae reddish. The female is distinguished chiefly 

 by having a few yellow spots on the black marginal 

 band of the upper wings. Examples of this sex 

 sometimes occur, in which the parts usually yellow, 

 are greenish-white, a circumstance which has led 

 some authors to describe it as distinct, under the 

 name of C helice. Varieties of both sexes have 

 been found in Britain, of a considerably smaller size 

 and paler colour than ordinary specimens, and pre- 

 senting at the same time so many other minute 

 points of difference, that they have been figured and 

 tlescribed as examples of the species named chrijso- 

 theme by continental naturalists.* 



The caterpillar is deep green, with a white line 

 along each side of the belly, marked with yellow 

 spots and minute bluish dots. On the Continent 

 it is found chiefly on the Cytisiis austriacus, but as, 



* See Stephen's lUus. of Entom. Haustellata, vol. 'i. p. 11, 

 PI. II*, figs. 1, 2. 



