COLIAS EDUSA, FAB. (CROCEUS, FOURC.). 251 
COLIAS EDUSA, FAB. (CROCEUS, FOURC.) : 
ITS SEASONAL FORMS, VARIETIES AND ABERRATIONS. 
By H. Rowzanp-Brown, M.A., F.E.S. 
(Continued from p. 187.) 
Besides the aberrations and forms published, and satisfying 
the formula to some extent, ‘‘ pas de bonne figure, pas de nom 
valable,”’ I find several others, e.g. those, to which no allusion 
has been made by me, on Mr. Fitch’s plate in the ‘ Entomologist’ 
for 1878. (a) Schopfer also figures (‘ Iris,’ vol. xii, pl. 1, fig. 2, 
1899). under C. hyale, L. (= edusa, F.), a male in which the 
nervures from the outer marginal band at apex are continued 
through to the discal spot, giving the example a streaky and 
smudgy appearance to some extent (probably = Striata, Geest 
(r), or very near to it). On the underside, also figured, the 
black connecting streaks are even more pronounced. The hind 
wing shows a brownish streak connecting the discal spots with 
the inner margin, and the spots themselves are very small. 
The example was taken at Partenkirchen in Bavaria, and the 
author is to be commended for not having at once labelled it 
with a fancy name. 
(b) Dr. Verity figures (‘ Rhopal. Palearet.,’ pl. xlvi, fig. 35) a 
? ab. of the gen. vern. bred from Hyeres larve by Mr. Harold 
Powell of that town. The discal spots on the fore wings are 
enlarged, and the yellow nervures traverse the marginal bands 
as in the typical male, while the yellow spots at the margin are 
reduced and suffused. 
The above retained thirty-four varietal and aberrational 
forms are, so far as I can ascertain, all described to the date of 
this paper. It is possible, and highly probable, that in Germany 
and elsewhere the list has been extended during and since the 
war. Ifso, I shall be greatly obliged if readers of the ‘ Ento- 
mologist ’ will refer me to the sources in which such publications 
have appeared. ‘The system of giving names to local forms, and 
especially to individual aberrations, is only to be commended 
where applied throughout a genus in such a way that the parallel 
range of variation in all the species of that genus is represented 
bv identical nomenclature. Colias edusa has been fortunate in 
this one respect. Its described forms, as to the majority of 
them, do bear some relation to the variation awarded the dignity 
of a distinctive name. The names Faille (u) and Cremone (l) 
alone record the original discoverer, and do not of themselves 
suggest the particular form concealed under their denomination. 
On the other hand, among those recently described, however 
beautiful the name from an esthetic point of view, names like 
Adoratrix (f) are of as littie value scientifically as proper names 
imperfectly latinised. I must plead guilty to having invented 
