Some British Moths Described 
exposure to the light, much of its charm may be 
retained. Moth in June and July. Larva on Beech 
and Oak from September to May. 
Pericallia bilunaria: the Early Thorn (Plate XIL., 
Fig, 4).—The Thorn Moths (of which there are about 
a dozen) derive their name from the fact that their 
larve, when at rest, greatly resemble a short branch or 
thorn, The Early Thorn is one of the first to appear, 
and is occasionally double-brooded ; the spring form 
being larger and finer than the autumn one. The larve 
may be beaten from Hawthorn, Oak, or Willow, during 
the summer months, The moth in April and May. 
Expanse, 14 to 13 inches. : 
Crocallis elinguaria: the Scalloped Oak (Plate XIL, 
Fig. 6).—Does not confine its attention to Oak, | 
once came upon quite a number of the larve destroying 
my favourite rose-bushes; Birch, Willow, and Haw- 
thorn are also attacked. May and June for the larva ;. 
July and August for the moth, which is common every- 
where. Expanse, 14 inches, 
Family AMPHIDASYD&, 
Phigalia pedaria: the Pale Brindle Beauty (Plate 
XII., Fig. 7; female, 74).—Presents us with a re- 
markable feature in moth life—the wingless female; 
how this has come to pass is a problem for the evolu- 
tionists. We shall meet with other examples as we 
progress, We would note, however, that all the wing- 
less species appear either very late in the autumn or 
very early in the spring, just when protection from frost 
7O 
