J14 



THE BUTTERFLIES OF THE 



Pieris Rapce, male (natural size). 



14. PIERIS KAI-.K, Linn. 

 Expanse of wings from 1.6 to 1.8 inches. 

 Upper surface white, the usual form having a brownish- 

 or grayish-black patch across the apex. The male has a 



submarginal round 

 spot in the first me- 

 dian interspace (see 

 Fig 28), and a some- 

 what elongated spot 

 on the costa of the 

 hind wings. The 

 females have a sec- 

 ond round spot at 

 the same distance 

 from the outer margin on the upper side of the subme- 

 dian vein. The base of the wings is dusted a little with 



gray scales, more so 

 in the female. 



On the under side 

 the fore wings are 

 white, pale yellow T to- 

 wards the apex, and 

 with two black spots 

 in both sexes corre- 

 sponding to the two 

 on the upper side of 

 the fore wings of the female. Hind wings pale yellow, 

 without marks, but sprinkled with black atoms. 

 Body black above, white beneath. 

 Var. NbvJE-ANGLLE, Scud. This form occurs, so far 

 as is now known, only in the Eastern States and New 



/ *- 



York. Ground color of both wings dull sulphur-yellow. 



FIG. 29. 



P. Rapse, female (natural size). 



