202 Mr. A. G. Butler on three new Species of Callidryas. 



crassum, nigro-fuscum ; gelatina hymenea iodo intense 

 cserulescens. 

 Ad rapes, Llyn Cae, Cader Idris. 



This lichen has much the general aspect of old specimens 

 of Lecidea Bruyeriana, Schfer., which have the thallus well 

 developed ; but it is abundantly distinct by the characters 

 above noted. The thallus becomes yellow with hydrate of 

 potash, which colour also remains on the subsequent applica- 

 tion of hypochlorite of lime. 



XXIII. — Descriptions of three new Species o/* Callidryas. 

 By Aethur G. Butler, F.L.S. 



I HAVE for some time contemplated writing a monograph of 

 the species of QaUidryas^ not only because there are in that 

 genus many species of great beauty still undescribed, but 

 because the sexes of the different species are not riglitly made 

 out, and need careful investigation. It was my intention to 

 commence my revision of the genus in the second part of my 

 '• Lepidoptera Exotica ;' but an unexpected influx of new 

 species of Charaxes has rendered this an impossibility. The 

 following new species will be figured in their proper places in 

 that work. 



1. Callidryas flava, sp. nov. 



^ . Alse supra ilava;, area apicali anticaruin dilutiore, margine costali 

 nigro puuctisque nervulos terminantibus apicalibus nigris : cor- 

 pus nigrum flavo hirtum, abdomine flavo. 



Ala3 subtus flava3, area anali anticarum albicante : corpus flavo- 

 albidum. 



Exp. alar. unc. 3. 



5 . Persimilis C. Endeeri, magis autcm flavescens maculisque anti- 

 carum submarginalibus in medio interruptis. 



Exp. alar. unc. 3, lin. 2\. 



Hob. Celebes. B.M. 



S ? . Obtained 1858 ; collected by A. R. Wallace, Esq. 



Allied to C. Jugurtha, Cramer (var. C. Endeer^ Boisd.), 

 but differs in the male being of a uniform yellow colour, as in 

 some extreme varieties of that species, and with a much nar- 

 rower black apical border to the front wings ; the female is also 

 of a brighter yellow than in C. Endeer^ and has the submar- 

 ginal spots of the front wing interrupted by brown. 



2. Callidryas rorata^ sp. nov. 



cJ . Ala; supra velut in C. Arrjante, punctis autcm marginalibus 

 majoribus : subtus flava;, fusco roratffi, striis squamosis velut in C. 

 Arf/ante latioribus, maeulis argenteie velut in ('. Larra' mari. 



Exp. alar. unc. 3, lin. 3, 



