There seems to be no question that the species is migratory in its habits, but exactly how it reaches this country is not definitely known. Neither is it known whether the species, having arrived, is able to reproduce its kind here. From the fact of its recurrence in England for four years in succession, the possibility of its breeding in this country might be assumed. One objection to any such inference, however, is that it is a many-brooded species, but, with the exception of two records in 1896, all British specimens were captured or seen in August, September, or October, and none seem to have been observed in the earlier months of those years in which the autumnal butterflies were obtained. [Illustration: _Pl._ 70. =Marsh Fritillary.= _Eggs, natural size and enlarged; caterpillar (after Buckler) and chrysalis._] [Illustration: _Pl._ 71. =Glanville Fritillary.= 1, 2, 4 _male_; 3, 5, 6, 7 _female_.] The Milkweeds (_Asclepias_) are not indigenous plants, but, as pointed out by the late Mr. J. Jenner Weir, _A. purpurescens_ and _A. tuberosa_ are hardy in this country. He endeavoured to ascertain whether these plants, or either of them, were grown in any of the gardens in the Cornish locality where four fresh specimens were captured in September, 1885. I do not find that the desired information was furnished. Recently I have ascertained that _A. cornuti_, which grows to a height of four feet, is used as a border plant in some parts of England. It is commonly known as Swallow-wort, and is esteemed for its fragrant pale purple flowers. * * * * * We now come to the Satyrinæ, which, as regards the number of species belonging to it, is a very large sub-family. In Great Britain, however, there are but eleven species, and although some of these are rather local, none are really scarce, and most are common. The Marbled White (_Melanargia galatea_). Older English names for the butterfly figured on Plate 75 are "Our Half-mourner" (Petiver, 1717), "The Marmoris" (Wilkes), and "The Marmoress" (Harris). The ground colour is white or creamy white, and the markings are black. On the under side the markings are similar in design to those on the upper side, but much fainter: the eye spots, which are not always in evidence above, are well defined below, and especially so on the hind wings. The female is generally whiter and larger than the male, and has the basal half of the costa, or front margin of the fore wing ochreous brown, and the markings on the under side of the hind wings are tinged with the same colour.