Swallow-tail Butterfly.

1 male; 2 female.

Pl. 3.

Black-veined White Butterfly.

Eggs, natural size and enlarged; caterpillar and chrysalis.

[Pg 31]

On Plate 1 three forms of the chrysalis are shown. The figures are drawn from specimens collected in Wicken Fen in October, 1905. Occasionally a much darker, nearly black, form is found.

This butterfly was known to Petiver and other early eighteenth-century entomologists as the Royal William. There is every reason to believe that at one time it was far more widely distributed in England than it now is. Stephens, writing in 1827, states that it was formerly abundant at Westerham, and gives several other localities, some very near to London.

During the last twenty-five years or so, the butterfly has been seen on the wing, from time to time, in various parts of the Southern and Midland counties. Caterpillars have also been fo. . . Read More