745 
I feel convinced that in this case a process of dissolution is out 
of the question, but that quite on the contrary we can still discover the 
last traces of the transversal bars along the front-margin of the 
wing, in the shape of isolated spots, the posterior and distal part 
of the wing meanwhile remaining under the dominion of the J’- 
diagonal-pattern. Yet I am willing to admit, that the reduction of 
the transverse rows of spots to three or four irregular blotches along 
the front-margin (called by Denso costal-spots) and the gradual 
diminution in size of these spots towards the wing-tip undoubtedly 
are in connection with the course of the V-diagonal, and that the 
entire set of these three or four blotches responds to the dark 
anterior marginal field of C. lineata. This latter area however I 
consider as a blending of those four blotches, i.e. as partial self- 
coloration, leading to uniformity of hue of the whole anterior 
marginal field. The justification for this way of regarding the 
question, I see in conditions as found in C. gallii, where the 
blotches, though in connection with each other, in such a way that 
the front border of the wing is entirely and uniformly dark-coloured, 
yet are perfectly distinct in their original extension by the occurrence 
of arcuate incisions from the side of the light diagonal middle V-bar. 
That Denso looks at this condition from an opposite point of 
view is revealed by his expression: “Galli possesses a broad costal 
margin, in which the (light) groundcolour has intruded, (the italics 
are mine), especially from three points of the middle-area am’’. 
The same considerations can be applied to the dark triangular 
area, which forms the postero-external border of the light diagonal 
bar, and which Denso calls p. When speaking of C. euphorbiae, 
he remarks about this bar: “The proximal limit of the transversal 
bar p, in its hinder part, which touches the back margin of the 
wing, has been removed towards the posterior wing-angle”’. According 
to my view, it has remained at its original place. 
Though his remarks about gallii are restricted to the words: 
“The bar p is broader than in euphorbiae. Its terminal point P is 
situated more towards the base of the wing”, he declares in a 
preceding passage: “Starting from the distal border” (of the light 
median area) “the marginal coloration of al increases in extension 
at the cost of p, and moreover am broadens along the posterior 
wing-margin, thus causing the proximal limit of p to stand more 
perpendicularly to that margin’. 
Also in this regard therefore, Dunso's views are diametrically 
opposed to mine. 
And yet I could see a possibility that Dunso’s view of the matter 
49 
Proceedings Royal Acad. Amsterdam. Vol XXII. 
