Genus 2.--DODONIDIA, Butl. Characters as in _Argyrophenga_, except that vein 11 of the fore-wings rises from upper margin of cell, shortly before transverse vein. We have one species in New Zealand. DODONIDIA HELMSI, Fereday. (_Dodonidia helmsi_, Fereday, Trans. N. Z. Inst. xv. 193.) (Plate XI., fig. 14, fig. 15 under side; Plate III., fig. 5 larva, fig. 28 pupa.) A single specimen of this interesting butterfly was discovered by Mr. R. Helms, in 1881, on the Paparoa Range, near Greymouth, at an elevation of about 1,500 feet above the sea-level. Until within the last three years only three other specimens had been captured, viz., one near Wainui-o-mata, in Mr. A. P. Buller's collection; one on the Dun Mountain, Nelson, at an elevation of about 2,500 feet, which is in my collection; and one on the Tableland of Mount Arthur, at about 3,300 feet, which was kindly given to me by Mr. C. W. Palmer. In the summer of 1894-95 several specimens were captured by Mr. P. Marshall near Wanganui,[53] and during the same season Messrs. Smithers and Hawthorne discovered the insect in considerable abundance at a locality near Silverstream, in the Wellington district. During the two following summers additional specimens were obtained near Silverstream, and I was fortunate enough to discover there a number of specimens of the larva, which furnished the material for the illustration and description of the preparatory stages of the insect given in this work. The expansion of the wings is about 2 inches. _On the upper side all the wings are dark brown. The fore-wings have two broad bands of yellowish-orange, the outer one containing a {113}small patch of dark brown near the costa, which touches a white-centred black ocellus. The hind-wings have one large patch of yellowish-orange containing two ocelli; a large ocellus, surrounded by a broad ring of reddish-orange, is situated on the tornus_; the tornus is produced into two very broad but short tails, which are bordered with white cilia. On the under side the fore-wings are light ochreous-yellow; there is a shaded brown patch at the base; the termen is broadly bordered with brown, the border containing a silver streak; two broad brown patches are situated on the costa, the outer one terminated by a small ocellus, and enclosing a silvery patch near the apex of the wing. _The hind-wings are silvery, narrowly bordered with deep reddish-brown, with five deep reddish-brown stripes running from the costa towards the tornus_; the fourth stripe from the base of the wing contains three ocelli surrounded by yellow rings; a conspicuous ocellus is situated at the tornus, surrounded by a broad orange-red ring. This insect appears to vary a little in the extent of the yellowish-orange colouring of the upper side. It also varies in size, specimens from the North Island being slightly larger than those from the South Island.