. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 172 Mr. A. G. Butler on a new Butterjiy. to New Zealand and probauly to Science," to which he gave the name of Genus ? helmsi; this species he referred to the Njmphalidae, but did not venture to assign it to any group in that family. As Mr. John D. Enys, who is now in England, has brought over the type specimen of this butterfly for my exaraiaation, with the request that I will determine its position and name the genus, I have great pleasure in doing so. The genus being a
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 172 Mr. A. G. Butler on a new Butterjiy. to New Zealand and probauly to Science," to which he gave the name of Genus ? helmsi; this species he referred to the Njmphalidae, but did not venture to assign it to any group in that family. As Mr. John D. Enys, who is now in England, has brought over the type specimen of this butterfly for my exaraiaation, with the request that I will determine its position and name the genus, I have great pleasure in doing so. The genus being a new one and greatly resembling the genus Dodona of Hewitson both in form and general coloration, I propose to call it. DuDONiDiA, gen. nov. This genus, as indicated by Mr. Fereday, belongs to the great family Nymphalidae (subfamily Satyrina3), and although it corresponds most nearly in form with Gorades (a New- World genus), it appears to me to be more closely related to the Australian genera Argynnina and Geitoneura^ from the former of which (apart from its different form) it chiefly differs in the shape of the discoidal cell of the secondaries, which is acutely pointed instead of truncated, owing to the length and obliquity of the discocellular veinlets. The body, inclusive of palpi and antenna3, corresponds closely with that oiArgynnina', the style of coloration of the wings is most like that of A. lathonieUa : the primaries are triangular, but with the apex and external angle obtusely rounded off; the costal margin is nearly straight, slightly incurved before the middle, and very slightly convex from apical third; the outer margin is nearly straight, rather oblique, slightly convex at apex, and incurved at external angle to meet the inner margin, which is also nearly straight; costal vein extending to apical third ; sub- costal five-branched, the first branch only emitted before the end of the cell, the second, third, and fourth at about equal distances beyond the cell, th
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