Une nouvelle Colias du Caucase. 



Par 

 Nicolas Mikhaïlowitch Romanofif. 



Colias Olga n. sp. (Pi. IV & V). 



Alis $'" piir2mreo-auranUacis, saepius violaceo-micmitibus ; 

 anticis puncto medio crasso subrotundato nigro, limbo externa 

 nigro ad costam latlori {ut in Col. Aurorina HS.) niyro- 

 fusco viride, flava cansperso, costa vix dikdiori disco; — j)^^' 

 ticis macula basait incrassata ochracea, macula media magna 

 dilutiori^ limbo angustiori intus subundidato nigro-fusco, mar- 

 ginibus, anteriori viride-flavo, analique flavo. $ae viridescente 

 albidis, limbo late nigro-fusco^ macidis 6 — 7 albidis notato, 

 vel purpureo-rubris, maculis in limbo flavis magnis; basi cos- 

 taque et posticis in toto plus mimisve nigro-adumbratis, pos- 

 ticarum macula media distincta aurantiaca, Subtus $" atiticis 

 viride-flavis, disco dilute aurantiacis, puncto centrali incras- 

 sato pnnctisque tribus antelimbalïbus fuscis; posticis viride-fla- 

 vis, macula ad marginem anteriorem punctisque marginalibus 

 rufo-fuscis^ macula centrali permagna^ roseo-brunnescente, obscu- 



