156 THE ENTOMOLOGIST. 
without a trace of the yellow or creamy white, and with bluish, 
not greenish, ground-colour. In my own experience abroad this 
form occurs more frequently than Helice. It was comparatively ' 
common flying in some rough meadows on the coast a little to 
the south of Guéthary, Basses-Pyrénées, in July, 1911, and my 
recollection of my hunt there with Mr. B. C. Warren is that the 
typical females were in a minority. Those in my collection are 
remarkable for the failure of the greenish tinge, which becomes 
bluish, culminating in ab. Cerulea, Verity. It would be interesting 
to have the views of our collectors on the relative proportion of 
the Helice and Pallida forms in the field. I do not remember to 
have observed the two pale forms together in Britain in the great 
Edusa and other years when the species has been abundant. 
Is this the third g aberrant form of M. Oberthur’s list 
(op. cit., fase. ili, pp. 173-75)—‘“‘la couleur jaune du fond des ailes 
tres pale’’? If so, or even if this be referable rather to Helice, 
it would constitute an exception to the rule that the extreme 
white and whitish forms are confined to the female. This 
particular form is stated to occur in Sicily and Corsica. 
(d) Ab. 2 (vel forma) Albissima, Ragusa. Ground-colour 
rather pale yellowish white, the median marking, hind wings, 
white, not orange. Appears to be intermediate between (b) and 
(c). Rare in Liguria (Rocci). 
(e) Ab. 2? Cerulea, Verity (‘ Entomologist,’ vol. xxxvil, p. 54, 
1904). This is an extreme aberration, in which, according to the 
author, the greenish colour of the underside of all the wings is 
replaced by sky blue with silvery reflections, but in the figure 
before me (‘ Rhopal. Palearct.,’ pl. xlvi, fig. 32) it is nearly 
white, not blue at all. At all events it is one of the most 
remarkable aberrations of the species figured or described. It 
was taken on Monte Matanna, Apuane Alps. The greenish 
colour in Pallida is often pale greyish blue, but Dr. Verity is 
definite that this aberration is sky-blue, and the forms, there- 
fore, should not be identical. 
(f) Ab. 2 Adoratriz, Stauder (1918). Described by the 
author as follows: ‘‘A further Croceus pallida-and-helice form, 
which bears a very broad marginal band on the upper side of 
the hind wings; in which, also, the light spots are nearly or 
entirely missing, and the band of the fore wings is very nearly 
entirely, or entirely unspotted, I designate as ab. 2 Croceus 
helice (pallida) adoratriz, Mihi (types: 32 2 from Triest, mid- 
September, 1910-12) (‘Boll. Soc. Adriat.,’ vol. xxvii, pl. ii, 
f.i4)2”7 
(g) Ab. d Cinerascens, Mihi (1921). A form of the ¢ in which 
the black markings tend to albinism, and are very pale grey, 
= No. 8 of the aberrations cited by M. Oberthur (‘ Lépid. Com- 
parée,’ fasc. ili, p. 173; ‘ Rhopal. Palearct.,’ pl. xlvii, fig. 10, 
and ‘ Jahresbericht Wien Ent. Ver.,’ 19038, pl. 1, fig. 1). 
