102 BRIMSTONE BUTTERFLY. 



is the sulphur butterfly, which, in the bright sunny 

 mornings of March, we so often see under the warm 

 hedge, or by the side of some sheltered copse, undu- 

 lating and vibrating like the petals of a primrose in 

 the breeze."* There are two broods, the first ap- 

 pearing in May and June, the last in autumn. It 

 occurs in great profusion in all the continental coun- 

 tries of Europe, and often in company with another 

 species so closely resembling it, that the one might 

 readily be taken for a variety of the other. The 

 jatter is named G. Cleopatra, and presents scarcely 

 any other distinctive mark, but a suffusion of bright 

 orange-red on the middle of the primary wings of 

 the male. Mr Curtis has figured, with his usual ac- 

 curacy and elegance, what he regards as a variety of 

 G. Rhamni, taken many years since in the neigh- 

 bourhood of London, and possessing characters al- 

 most intermediate between the two species. 



* Journal of a Naturalist, 98. 



