PIERIS. 149 



Lepid. i. pp. 20, 156, pi. ii. fig. 4 (1886); Rye, Brit. 

 Macro-Lepid. i. p. 13, pi. iii. figs. 1-5 (1895). 

 Pontianapi, Stephens, 111. Brit. Ent. Haust. i. p. 20 (1827). 



Var. P. bryonice. 



Var. Papilio bryonice, Ochsenheimer, Schmett. Eur. i. (2) p. 



151 (1808). 



Pieris bryonice, Godart, Enc. Meth. ix. p. 162, no. 146 (1819). 

 Papilio napi, var. Esper, Schmett. i. (2) p. 87, pi. 64, figs. 3-5 



(1783) ; Hiibner, Eur. Schmett. i. fig. 407* (1803?). 

 Pieris napi, var. bryonice, Lang, Butterflies Eur. p. 32, pi. 7, 



fig. 2 (1881). 



Var. P. napcece. 



Var. Papilio napcece, Esper, Schmett. i. (2) p. 119, pi. 116, fig. 

 5 (1800?); Hiibner, Eur. Schmett. i. fig. 664, 665 (1818?). 

 Pontia napcece, Stephens, 111. Brit. Ent. Haust. i. p. 21 (1827). 

 The Green-veined White is as widely distributed as the other 

 species of Pieris, but is not quite so abundant, and is per- 

 haps rather more fond of lanes and clearings in woods. It is 

 also very variable, and like the other species, is found through- 

 out the summer, being at least double-brooded. 



It is about the size of P. rapce, expanding from an inch 

 and a half to nearly two inches. The wings are white, with 

 the base blackish, and the tip of the fore-wings and a spot 

 towards the end of the costa on the hind-wings brown or 

 blackish. The male has a black spot on the disc of ^the fore- 

 wings, and the female has two. On the under side the tips of 

 the fore-wings, and the hind-wings are sulphur-yellow, with the 

 nervures more or less strongly incrassated with dusky-green. 

 In the female the two black spots on the disc are reproduced. 



This is an extremely variable insect, and one of its forms (P. 

 sabellicce, Stephens) will be considered separately. Another 

 form, P. napcece (Esper), is larger than the typical form, the 



