164 Mr. A. G. Butler on the Subfamily Pericopiinae. 



under this subgenus belongs to the next group, the sexes being 

 almost alike ; I shall therefore adopt the name for that section 

 of the genus. 



1. Thebrone Jansonis ? , Butler, Lep. Exot. pi. xvii. 

 figs. 4,5(1870). 

 ? Thebrone Arema$ , Boisduval, Lep. Guat. p. 85 (1870). 

 Hob. Nicaragua. $ , B.M. 



It is possible that T. Arema may belong to the hyaline 

 group of typical Pericopis. Without seeing the insect, it is 

 impossible to determine. 



2. Thebrone Aglaura, Cramer, Pap. Exot. pi. 263. 

 fig. F,<? (1782). 



Hob. Venezuela. $ ? , B.M. 



The female has an oblique whitish band across the centre 

 of the primaries ; in other respects it approaches T. Jansonis 

 in colouring. 



3. Thebrone turbida, Hiibner, Zutr. ex. Schm. 

 figs. 529,530, ? (1806). 



Pericopis lunifera, Butler, Ann. & Mag. Nat. Hist., Oct. 1871, p. 288. 

 Hob. " Bahia " {Hiibner) ; Brazil. <$ ? , B.M. 



The male is very like P. Aglaura, excepting that the central 

 oblique blackish bar of the primaries is obsolete. 



4. Thebrone tricolora, Sulzer, Gesch. pi. xxii. fig. 5, ? (1776). 



Hab. Para" (<?$); Brazil ( $ ). B.M. 



The male chiefly differs from the preceding in the yellow 

 colouring of the secondaries ; the blackish bar of the primaries 

 is obsolescent. 



5. Thebrone formosisstma, Butler, Ann. & Mag. Nat. Hist., 

 Oct. 1871, p. 288. 



Hab. Columbia and Ecuador. £ ? , coll. Hope, Oxford. 



Subgenus 2. Aphisaon (part.), Boisduval. 



1. Aphisaon? Bosina, Butler, P. Z. S. p. 82 (1871) ; 

 Lep. Exot. pi. xxx. fig. 1, ? • 



Hab. Ega. B.M. 



This species has much the aspect of the preceding group, 



