20 Dr. A. G. Butler on the Butterflies of 



12. Pier is apicalis, sp. n. 



<. Allied to P. mandela, but usually considerably larger, 

 the apical border on the primaries with more oblique inner 

 edge, its inferior continuation on outer border distinctly 

 narrower, the upper subapical white spot larger ; secondaries 

 with the posterior half of the outer border decidedly broader : 

 primaries below with the apical patch and border still more 

 reduced, only one whiter submarginal spot (or at most two) ; 

 secondaries with decidedly whiter, mostly white, irregular 

 central belt. 



Expanse of wings 70-79 millim. 



? . Not unlike the female of P. mandela, but much larger, 

 the secondaries above with the whole base almost to the end 

 of the cell suffused with greyish brown : the primaries on 

 under surface not sulphur-tinted at base and the secondaries 

 more pink in tmt, tlie brown portions more coffee-coloured, 

 the submarginal spots larger. 



Expanse of wings 74 millim. 



Two males, Quito and Upper Amazons : in coll. Hewitson. 

 Male, Bogota ; female, E. Peru : B. M. 



The type of the male is from Quito, that of the female 

 from E. Peru (registered " Nauta "j *. Hewitson referred 

 one male of this species to P. mandela and the other to 

 P. locusta, being guided solely by expanse of wings. 



13. Pier is locusta. 



Pieris locusta, Felder, Wien. ent. Monatschr. v. p. 81 (1861) ; Reise 

 der Nov., Lep. ii. p. 175, pi. xxv. figs. 8, 9 (1865). 



Two males, one female, Bogota. B. M. 



The female is a good deal like P. noctipennis, the chief 

 difference being that the secondaries show a greyish nebulous 

 subcostal belt, barely visible until beyond the discoidal cell, 

 and two sharply defined, apical, submarginal, creamy-white 

 spots. Looking at the illustrations of both sexes in the 

 * Biologia Centrali-Americana,' I must admit that I greatly 

 doubt the specific distinctness of the two forms. 



14. Pieris noctipennis. 



9. Pieris noctipennis, Butler and Druce, Cist. Ent. i. p. Ill (1872) ; 

 Lep. Exot. p. 118, pi. xliii. fig. 7 (1872). 



$ , Nicaragua. In coll. Hewitson. 

 The male is represented in the ' Biologia ' with rather more 



* I have frequently called attention to the fact that the specimens 

 thus registered are all* believed to have been collected in E. Peru. 



