VADE MF.CUM. 135 



ASCERTAINED BRITISH SPECIES, 



ACCORDING TO MR. DUNCAN. 



PONTIA CHARICLEA— /V. S. fig. 1. 



This inspct is less than P. /imssica: The anterior wings 

 with light l)rown patch at tlie tip, clouded internally with 

 black, fringe yellowish white : underside tip of primary wings 

 yellow ; secondary pair entirely deep yellow, with minute 

 black points. 



PONTIA METRA.—pl. ».fig. 2. 



The mngs of this insect expand from 20 to 25 lines. Tlie 

 colour is entirely yellowish white, base of the wings blackish, 

 tip of the anterior light brown ; in the male, a single obsolete 

 du-sky spot, in the female two. The hinder wings are wholly 

 white, with the nsual dusky spot anteriorly, tip of upi)cr 

 wings yellow beneath two faint spots on the disk, hinder 

 wings bright yellow beneath, with black points, fringe pure 

 white. 



PONTIA SABELLIC^E.— /;/.8.y!g^. 3. 



Upper wings short and rounded, yellowish white; base 

 anterior margin and tip black, nervures with a broad stripe 

 of the same colour ; male a single dusky spot near the tip, 

 the female two. Underside hinder wings and tip of the 

 anterior sulpbor yellow, nervures dusky. 



