78 



hind-wings are white at the base, especially in the male, with 

 dark nervures and a central spot, but are darker in the female. 

 In both sexes they are frequently tinged with rose-colour. On 

 the hind margin is a grey band, which becomes lighter towards 

 the white fringes. 



The larva feeds on larkspur {Delphinium consolidd), and is 

 often met with in fallow fields on the Continent. When 

 young the larvae live gregariously. They are violet-grey, the 

 head being marked with several black spots. There is a 

 narrow, sulphur-yellow dorsal line, and another on each side. 

 In addition, the surface of the body is covered with small 

 black tubercles, each bearing a fine hair. 



The pupa is reddish- brown, with greenish wing-cases. It is 

 formed in the ground. 



The moth is on the wing in May and June. 



GENUS RHODOPHORA. 

 Alaria^ Westwood in Jardine's Nat. Libr. Exot. Moth?, p. 200 



(1841); Walker, List Lepid. Ins. Brit. Mus. xi. p. 674 



(1857), nom. pr&occ. 

 Rhodophora, Guenee, Spec. Gen. Lepid. Noct. ii. p. 170 



Antennae simple, slightly pubescent in the male. Palpi 

 short, clothed with velvety scales, and indistinctly jointed. 

 Proboscis very slender ; front rounded. Thorax partly crested, 

 and not very stout. Abdomen smooth, and conical in the 

 male. Legs short ; front tibiae with at least one long spine. 

 Wings entire ; fore wings rather pointed at the tip. Larva 

 very long and slender, with transverse bands. 



RHODOPHORA GAUR^E. 



(Plate CXXVIII^ Figs. 4 (imago], 5 (larva).) 

 Phalcena gaurcE, Abbot & Smith, Lepid. Georg. ii. pi. yy (1797), 



