148 Lloyd's natural history. 



succession of broods throughout the year. The pupa is greenish, 

 spotted with black. 



Howard's white butterfly, pieris metra. 



[Plate LIII. Fio-s,2, 3.) 

 Pimtia mdra, Stephens, 111. Brit. Ent. Haust. i. p. 19 (1827). 

 Pieris metra^ Westwood, Brit. Butterflies, p. 26, pi. 5, figs. 5, 6 

 (1841). 



This insect is found in April and June, and is considered to 

 be undoubtedly a mere variety of 7^. rapce., as the pupa does not 

 differ. 



The wings are white or cream-colour, the fore-wings being 

 much pointed at the tip, with the base black, and the tip more 

 or less clouded with dusky. The male has one black spot on 

 the fore-wings above, and the female two ; but these are fre- 

 quently more or less obsolete. The hind-wings are white, with 

 the base black, and a dusky spot towards the end of the costa. 

 On the under side the tip of the fore-wings is yellow ; the base 

 is blackish, and there are two obsolete spots on the disc ; the 

 hind-wings are rather bright yellow, thickly dusted with blackish, 

 and there is a pale orange streak at the base of the costa ; the 

 fringes are white. 



THE green-veined WHITE BUTTERFLY. PIERIS NAPL 

 [Plate LI V. Figs, i, 2.) 

 Papilio napi, Linn. Syst. Nat. (ed. x.) i. p. 468, no. 60 (1758) 

 id. Faun. Suec. p. 271 (1761); Esper, Schmett. i. (i) p 

 57^ P^- 3j figj 3 (1777); Hiibner, Eur. Schmett. i. figs 

 406, 407 (1803?). 

 Pieris napi, Godart, Enc. Meth. ix. p. 161, no. 145 (1819) 

 Boisd. Spec. Gen. Lepid. i. p. 518 (1836); Newman, Brit, 

 Butterflies, p. 160 (188 1) ; Kirby, Eur. Butterflies and 

 . Moths, p. 7, pi. 4- fig- 5 (1878); Lang, Butterflies Eur, 

 p. 31, pi. 7, fig. I, pi. 15, fig. 3 (1881); Barrett, Lepid 

 Brit. isl. i. p. 24, pi. 3 (1892); Buckler, Larv?e of Brit 



