As the supply of strawberry foliage was failing, the caterpillars were given bramble on July 21, and the next day each was found enclosed in a sort of envelope formed of a bramble leaf. They were then seemingly in their last skin, whitish-green in colour, and covered with short whitish hair; a whitish edged dark olive-brown line along the back, and similar lines on the sides; between the rings the colour was pale ochreous. The date of pupation was not noted, but on September 9, one of the spun-together bramble leaves was opened, and a chrysalis found within. This was pale brown, with dark brown or blackish marks along the back and sides; the head and back were covered with dense pale reddish-brown bristles; the wing, leg, and antennæ cases were greenish, smooth, and shaded with brownish. Between the head and first ring of the body above there was a deep furrow, with a black-centred white spot on each side of it (Plate 123). [Illustration: _Pl._ 120. =Duke of Burgundy Fritillary.= 1, 2, 4 _male_; 3, 5 _female_. =Milkweed Butterfly.= 6 _male_.] [Illustration: _Pl._ 121. =Duke of Burgundy Fritillary.= _Egg enlarged; caterpillar and chrysalis._] Besides the plants adverted to above, the caterpillars will eat raspberry (_Rubus idæus_) and cinquefoil (_Potentilla fragariastrum_ and P. _reptans_). The butterfly is pretty generally distributed in Great Britain, but does not seem to be common in Ireland, as Kane only mentions two examples, from Killarney. It is found in May and June on chalk downs and other hillsides, especially in the hollows and sheltered nooks, also in and around woods, and in rough fields. On dull days and at night it may be found sitting, with the wings erect over the back, on various seed-heads, etc. The species is double brooded on the Continent, and occasionally a few butterflies will appear in August, but such emergences depend on a combination of favourable circumstances. In very forward seasons it has been seen on the wing during the last week in April. Its range extends over Europe and into Northern Asia. * * * * * As Barrett refers to the capture in Norfolk (May or June, 1860) of several specimens of the Central and South European species, _H. alveus_, Hüb., it maybe well to mention it here, if only for the purpose of quoting his remarks thereon. After detailing the facts connected with the occurrence, he states, "It seems undesirable now to introduce the species to a place in the British list, but rather to record the captures in question as specimens accidentally introduced with plants, or else the result of a very exceptional act of migration." The Dingy Skipper (_Thanaos tages_).