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46 
might after all prove right. For this would be the case, when we 
had to surmise, that in gall, and still more in euphorbiae, the 
presence of the spots along the anterior wing-margin was due to 
reversion of the archaic pattern, i.e. to atavism. We then should 
be obliged to imagine that in the pattern of lineata, the uniform 
dark anterior region of the diagonal-pattern, itself derived from the 
coalescence of the anterior parts of the original seven transversal 
rows of spots, had again been solved into a certain number of free 
blotches. The fact that this number is lower than seven, renders 
some probalility to the supposition that we have here to do with 
a secondary dissociation of an originally coherent longitudinal bar 
along the entire anterior wing-border. But according to my view the 
primary cause of this dissociation may be seen in the hereditary 
presence of the tendency to the formation of isolated marginal spots, 
belonging to the ancient pattern of transverse rows of maculae, 
which is common to all Heterocera. 
When trying to analyse in this same way the complicated pattern 
of the upper-side of the forewings of Deilephila (Daphnis) nerit, 
we come to the conclusion that without constraint derivatives of all 
the seven transversal bands can be recognized in the alternately 
dark and light areas along the anterior wing-margin, but that only 
one of them, viz. V, runs on unbroken to the posterior margin, 
VI nearly doing as much, as it only becomes crossed by the white 
external seam of the dark root-field. The disturbances in the rest of 
the transverse bars may for the greater part be attributed to the well- 
known influence of the V- and the A-diagonal-design. The first manifests 
itself in the same manner as in euphorbrae, gallü etc, but in nerw 
only fragments of the light median bar of the remaining Deilephilas 
can be discovered. In the first place we remark the light apical 
marking, strongly contrasting to the extremely dark anterior segment 
of bar I. Then comes the white curved stripe in the middle of the posterior 
margin, abutting towards the median side against a peculiarly dark 
hinder part of a transverse bar (probably a fragment of IV) and 
which in its forward zig-zag-course gets twice abruptly broken. I 
presume that this characteristic white zig-zag-line represents part of 
the distal border of the triangular light central part, which broadens 
towards the hind margin and is so characteristic of Chaerocampinae. 
For the rest this light central field is only represented next to 
the root-field by its most proximal part running along the posterior 
wing-border. This part narrows and describes a convex curve, thereby 
passing into the area of bar VI, and reaching the anterior margin. 
In the same way the light colour-party at the external border of V 
