264 
[April, 1881. 
emerging through September, October, and November. According to 
my experience, the larvae collected in July and early in August the 
moths from which emerge in September, produce a far larger proportion 
of singular and beautiful varieties of the perfect insect than those 
collected later. The moths from the May brood are small, and still 
ler-s variable. Treitschke says that the larva feeds on Salix caprea , 
aurita and acuminata, Andromeda and Vaccinium. It seems probable 
that the larvae on the two last-named plants may belong to other 
species, possibly maccana. 
Peronea variegana , Scliiff. — Larva rather sluggish, cylindrical, 
bui slightly flattened anteriorly, with deeply divided segments. Pale 
} el low ish or pale green, with distinctly pulsating dark green or reddish- 
brown internal dorsal vessel. Spots not visible, hairs minute, head 
shining yellowish-brown, plates yellowish or green. On hawthorn, 
joining two leaves together with very white silk, often joining a dead 
leaf to a living one. It, however, deserts this habitation to spin up. 
1 eeds through J uly, and the moth emerges in August or September. 
It also feeds on blackthorn and other trees. Treitschke says on fruit 
trees, Corglus, Cotoneaster and Carpinus, Wilkinson rose and bramble. 
I am well aware of the extreme difficulty of establishing a new 
species in such a genus as Peronea , but I find that the species of the 
genus are exceedingly constant in one respect, that of the form of their 
fore-wings. Therefore, I have for years been puzzled by specimens 
winch did not agree in this respect with any recognised species. My 
first specimens were taken in a “car” at Eanwortk fen, and I placed 
them provisionally with logiana, but, after rearing that species in large 
numbers, and becoming intimately acquainted with its shape and its 
phases of variation, I saw that the Eanworth specimens must be 
removed. They wmre then placed with Schalleriana, but when I found 
the species in some numbers here in Pembrokeshire, and collected it 
along with Schalleriana , comparana , and the varieties of variegana , and 
saw its distinct shape — even more evident in living specimens, I had 
no resource but to look upon it as a species distinct from all of them ; 
and, further, that the separation of this form rendered the allied species 
much more natural and recognisable, I find that my own difficulty 
has been shared by several friends— close and careful students of this 
group,— and they cordially agree in my view of the distinctness of the 
species. Dark specimens sent to Professor Zeller, several years a'^o, 
were not known to him. 
