119 



HOWARD'S WHITE BUTTERFLY". 



Pontia Metro, . 



PLATE VIII. Fig. 2. 

 Stephens Illus. Haust. i. 19. 



The wings of this insect expand from 20 to 25 

 lines. The colour is entirely yellowish-white, the 

 hase of the wings blackish, and the tip of the ante- 

 rior pair, which is more acute than in the allied spe- 

 cies, slightly suffused with light brown : in the male 

 there is a single dusky spot, and in the female two, 

 which, however, are always very obsolete, and some- 

 times, as in the variety figured, entirely wanting. The 

 hinder wings are wholly white, with the usual dusky 

 spot anteriorly. The tip of the upper wings is yel- 

 low beneath, and two faint spots are observable on 

 tlie disk ; the hinder wings beneath rather bright 

 yellow, especially on the anterior edge at the base, 

 and sprinkled with black points. The fringe of the 

 wings is nearly pure white. 



Occurs early in April, and there appears to be a 

 second brood in June. It has been noticed chiefly 

 in the south of England, but is probably to be found 



