154 



VARIETIES OF NOCTtLaB 



writing of it : " Prgec. (quadripunctata) ab. lutescens?." Guenee treats 

 it as a distinct species, and it is so treated in most of the dealers' 

 catalogues. There appears to be no difference whatever, except in 

 the yellow ground colour, and our specimens occasionally vary in this 

 way. I have such from Deal. Eversmann's description is : " Ala3 

 anticae lutescenti-griseas, punctis aliquot costalibus punctisque tribus 

 linese internee nigris, serie externa flexuosa punctorum fuscorum obso- 

 leta, maculis ordinariis dilute fuscescentibus, rotunda minuta nigra, 

 media reniformi, punctulis obsoletis albis terminata. Alae postica? 

 candidte " (' Bulletin de la Socie^ de Moscou,' 1848, iii., 215). 



