LEPIDOPTERA. 261 



being true sulphur in the male, while the female is 

 somewhat whiter. 



Individuals are common of a tender greenish hue, 

 which, combined with the angular form of the wings, 

 gives a remarkably leaf-like appearance to the insect. 

 The time of its appearance adds another charm, the 

 Sulphur Butterfly being usually the first awakened from 

 its winter sleep, while it is also one oij the latest to 

 remain with us, as if unwilling to give up the hope that 

 " summer liveth still." 



Those seen in the Autumn months are the lately- 

 hatched individuals, the earlier visitors being such as 

 have lain dormant through the winter. 



The common large and small White Butterflies, the 

 delicate and somewhat transparent " Black-veined White," 

 the " Bath White," with its patches of black, and its 

 greenish under-side, are all included in this family, which 

 contains eleven species. 



2. Nymphalidae. The most striking peculiarity in this 

 family is that all the species (in both sexes) have only 

 four legs ; the front pair being undeveloped. This dis- 

 tinguishes the Nymphalid from all other Butterflies 

 but one namely, the male of Nemeobius lucina, the only 

 British Butterfly in the 3rd family. 



In the Nymphalidse the colours are generally dark, or 

 rich and sometimes beautifully variegated ; dark brown, 

 rich tawny-brown, orange, black, with brilliant markings 

 of scarlet, blue, and white, being all found here. One 

 exception to them is found in a black and cream- 

 coloured Butterfly, the " Marbled White," which in this 

 assimilates with the Papilionidae. The absence of the 

 front pair of legs, however, at once marks it as belong- 

 ing to the present family, and some ring-like spots, with 



