202 Mr. A. G. Butler on three new Sjiecies o/'Callidryas. 



crassum, nigro-fuscum ; gelatina hymenea iodo intense 

 cgerulescens. 

 Ad rupes, Llyn Cae, Cader Idris. 



This lichen has much the general aspect of old specimens 

 of Lecidea Bruyeriana^ Schaer., 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. Butlee, F.L.S. 



1 HAVE for some time contemplated writing a monograph of 

 the species of CalUdryas^ 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 rightly 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 flava3, area apicali anticarum dilutiore, margine costali 

 nigro piinctisque nervulos terminantibus apicalibus nigris : cor- 

 pus nigrum flavo hirtum, abdomine flavo. 



Alse subtus flavse, area anali anticarum albican te: corpus flavo- 

 albidum. 



Exp. alar. uuc. 3. 



2 . Persimilis C. Endeeri, magis autem flavescens maculisque anti- 

 carum submarginalibus in medio interruptis. 



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



Hah. Celebes. B.M. 



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



Allied to C. Jugurtha^ Cramer (var. G. 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. CalUdryas rorata^ sp. nov. 



cJ . Alse supra velut in C. Argante, punctis autem marginalibus 

 majoribus : subtus flavse, fusco roratae, striis squamosis velut in C 

 Argante latioribus, maculis argenteis velut iu C. Larrce mari. 



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



