THE ENTOMOLOGIST 
Vou. XLUIT.] nye L909: [No. 554 
FURTHER VARIATION IN NYSSIA LAPPONARIA. 
By HE. A. Cockayne, M.A., F.E.S., F.L.S. 
(PuatE VY.) 
Amonast a very large number of males of Nyssia lapponaria 
which I have examined since I wrote my note in the ‘ Entomolo- 
gist,’ vol. xxxvil. p. 249, the following forms seem worthy of 
record :— 
In 1906 Mr. F. W. J. Jackson bred a very remarkable aberra- 
tion from eggs which I obtained in the Rannoch district. In the 
fore wing of this (fig. 1), a very small specimen, the third line is 
moved inwards so far from the termen that it passes through 
and obscures the discal spot. The second line is also moved 
inwards and joins the third about halfway across the wing. The 
first line is further than usual from the base of the wing, and 
runs almost parallel to the second, actually touching it at a point 
a short distance from the costa. Thus all three lines are parti- 
ally fused, and the large space which usually exists between the 
first and second line is almost obliterated. Similar aberrations 
are well known in many other Geometride. 
Fig. 2 shows a melanie specimen in which the second line, 
though indistinct, does touch the first, but the third line is in 
the normal situation. 
These two photographs were taken with the same conditions 
of light and background. 
In 1907 I took a male with all the orange replaced by yellow. 
Specimens with the costa pale yellow and the abdominal stripe 
speckling orange are not very uncommon. In this, as far as I 
know a unique male, the costa is almost white, and the thoracic 
and abdominal stripe pale yellow. I have also one female with 
yellow instead of orange markings. For this yellow form lutea 
seems to be a suitable name. 
This year I have received a specimen (fig. 3) with the black 
lines more obsolete than in any other I have seen. The discal 
spot is very distinct, and the costal stripe unusually deep orange. 
ENTOM.—JULY, 1909. P 
