This pretty 'Brown' must be familiar to the reader, and the coloured drawing on [Plate V] (fig. 6) will at once serve for purposes of identification without the necessity of a wordy description. It may be mentioned, however, that the male (the sex figured) is smaller than the female, and is further distinguished by a broad dark oblique band passing across each fore wing.
The Wall is a double-brooded butterfly, the first brood appearing in May, and the second in August. The caterpillars which produce the latter may be found on the cock's foot (Dactylis glomerata) and other grasses in June, while those of the former are hybernators; and the chrysalides of the two broods may be found in April and July respectively.
The colour of the caterpillar is green, with a slightly darker stripe down the middle of the back, a pale stripe along each side, and another similar stripe about midway between these two.
The chrysalis is green with the exception of the more prominent parts of its surface, which are almost white.
This species is very common in almost every locality in Britain.
The Grayling (Satyrus Semele)
The Grayling is the largest of our 'Browns,' and, although a powerful flier, it seldom takes long flights. The female, which is shown in fig. 7, [Plate V], is really a beautiful creature, the light markings of which stand out in bold contrast with the deep brown ground colour; but the male is comparatively dingy, there being much less contrast between the ground and the markings. He is also smaller than his mate.
The under side of both sexes is similar ([fig. 79]), the pattern of the fore wings being much like that of the other side, but considerably