384 Mr. A. R. Wallace on 



1. Prioneiis thesfyUs, Doubieday. 

 P'leris thestyliSf Doubl. Zool. Misc. p. 7fi. 

 //fl6.— North India, Darjeeling (Coll. Wall., B. M.). 

 Female. — Almost exactly like P. seta, but rather larger, blacker, 

 and the colour beneath a rather greenish gamboge-yellow, without 

 any tint of orange as in that species (Coll. Moore). 



2. Prionerh seta, Moore. 

 Pieris seta, Moore, Proc. Zool. Soc. 1857, p. 102, t. 44, f. 3, ?. 



Male. — Above, white ; upper wings with the costa, apex, and 

 outer margin nearly to the outer angle, black, and all the veins 

 beyond the cell black-margined ; lower wings with a black fringe, 

 and the orange markings of the under surface showing through. 

 Beneath, the costal border is wider and with the apex is of a pale 

 violet slate-colour, enclosing a white spot in the cell, and one or 

 two others near the apex ; the lower wings have patches of rich 

 orange or chrome-yellow in the cell and between all the nervures, 

 except two slaty patches, one below and the other above the base 

 of the cell, the upper one enclosing a yellow spot. 



Expanse of wings 2| — 2| inches. 



This appears to be the most common form, but a series of 

 variations occur by which it is brought nearer and nearer to P. 

 iJiestylis. 



In the extreme form in this direction, the upper wings above 

 are almost exactly as in P. thestylis ; the lower wings differ 

 in having only a very narrow dusky border, and in being of a 

 different tint, owing to the orange colour of the under surface 

 showing through. Beneath, the markings are almost identical 

 in the two species, except that in P. seta the spots are all larger, 

 especially the first from the abdominal margin, which extends 

 down to and encloses the marginal spot, and in being all pale 

 chrome or orange instead of pure gamboge-yellow, and the ground 

 colour being of a purplisli slate-colour, instead of nearly black. 



Expanse 3\ inches. {P. thestylis 3| inches). 



Female. — The type is probably that represented by Mr. Moore. 

 Mr. Watson, of Manchester, has, however, sent me for examina- 

 tion a curious specimen, which I believe to be a female approxi- 

 mating to the colouration of the male. Above, the upper wings 

 differ from the male in having several dusky lines in the cell, 

 leaving two or three distinct white spots near its upper border; 

 the hind wings have a narrow black toothed border, and between 

 the anal angle and the cell a large roundish ill-defined orange 



