COLIAS EDUSA, FAB. (CROCEUS, FOURC.). 155 
the Oberthtr Collection—one from the New Forest, the other 
from Folkestone. A male form is suggested by pale-coloured 
examples (? = ab. chrysotheme, Stgr.). I have one such caught 
by the late Rev. H. C. Lang in 1892 at Southend-on-Sea, Hssex. 
It seems to occur on the Continent sporadically, and is stated 
to be rather rare in Algeria (cp., however, under ab. T'ergestina, 
Stauder, infra). With regard to the ab. Aubuissoni 9, Caradja 
(‘ Iris,’ vo]. vi, pp. 171-2, ‘‘Grosschem. des Dep. de la Haute 
Garonne, 1893”), a point on which there appears to be some doubt 
(cp. Mr. Wheeler’s remarks in his ‘Butterflies of Switzerland,’ 
p- 70), I note that M. Oberthur ignores the name entirely as being 
synonymous with his Helicina, though Dr. Verity retains it. It 
is advisable, therefore, to examine Caradja’s diagnosis : 
‘‘Aberatio ochracea, alis posterioribus macula media permagna 
ochracea ; est forma intermedia inter Hdusam et Helicem.” 
And he continues, ‘It is a form approaching Helice, but with 
all the wings more or less overlaid (wbergossen) with bright orange, 
and in the intensity of the gold coloration more often resembles 
Edusa. The very large deep orange discal spot on the hind 
wings, which stands out conspicuously from the grey-dusted 
ground-colour, is also characteristic.” In the figured Helicina 
the pale yellow is constant and pervades the ground-colour of 
the upper side. Aubuissoni, on the other hand, from the above 
description would seem to imply a transitory form to Helicina 
and through it to Helice. However, in my opinion it constitutes 
nothing more than a trivial colour aberration, and I see no 
reason to maintain a separate name for it. There is what 
appears to be a very curious Helicina x Helice hybrid, the last 
but one of the right-hand series illustrated on Mr. Fitch’s plate 
(op. et loc. cit.), and again opposite this figure another with fore 
wings Helice and hind wings Helicina rather than Hdusa. 
There appears also to be an intermediate Algerian form between 
Helice and Pallida with a greenish-white ground-colour described 
(‘ Lépid. Comparée,’ fase. x, p. 76), but for which M. Oberthur 
considers a distinguishing name superfluous. 
[(bbb) Ab. 3 2 Tergestina, Stauder (1918), is described by the 
author (‘ Boll. Soc. Adriat.,’ vol. xxvii) as ‘‘the lemon-and-sulphur 
yellow aberrational form g¢ ?.” Dr. Verity comments (in litt.) : 
‘‘This seems rather confused! The 2 has the name of Helicina, 
Obthr., already. I have seen the type at Rennes, and it is of a 
bright lemon yellow. There is no g form that corresponds. 
Pale males are simply weak individuals, and not a transition to 
the white Helice like the yellowfemales.”” I agree with Dr. Verity, 
to whom I am further indebted for the communication of Herr 
Stauder’s several notes and other valuable information about 
the species under review. The name Tergestina, therefore, is 
redundant, and falls. | 
(c) Ab. 2 Pallida, Tutt (1896). The extreme white form 
