In this paper, I am going to deal with four related genera of Thyatiridae: Demopsestis MATSUMURA, 1927, Takapsestis MATSUMURA, 1933, Neoploca MATSUMURA, 1927, and Asphalia HUBNER, [1821]. Demopsestis, Takapsestis and Neoploca were each established for the reception of a single species, viz. Asphalia punctigera BUTLER, 1885, Takapsestis wilemaniella MATSUMURA, 1933, and Xylina arctipennis BUTLER, 1878, respectively. Asphalia was proposed for the two European species, Noctua diluta [DENIS et SCHIFFERMULLER], 1775, and Noctua ruficollis [DENIS et SCHIFFERMULLER], 1775, and the latter was subsequently designated as the type-species of Asphalia by HARVEY, 1874. These genera have not been revised and the name Asphalia is not currently used by European authors, who consider it a junior synonym of Polyploca HUBNER, [1821]. "A." diluta is now treated as a sole member of the genus Cymatophorima SPULER, 1908. No further species has ever been included in the above genera. Through the kindness of Mr. M. R. HONEY of the British Museum (Natural History), London, I could study the photos of the male genitalia of several Thyatiridae described under the genera Polyploca or Palimpsestis HUBNER, [1821], and I learned that some of them should correctly be transferred into the genus Takapsestis. During my collecting trip to Taiwan, I obtained a fairly long series of specimens belonging to an undescribed species of the genus Demopsestis. The genus Epipsestis MATSUMURA, 1921, is also related to the genera discussed here, and it was mentioned by me in another paper (YOSHIMOTO, 1982).

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A well-ordered list of the Nepalese Thyatiridae was for the first time compiled by WERNY (1968) on the basis of the collection of Zoologischen Staatssammlung in Munchen brought by G.EBERT'S (1962) and W.DIERL'S (1964) surveys; he listed 20 species under 9 genera, including the descriptions of one new genus, 4 new species* and 9 new subspecies*. Several species were fragmentarily mentioned from Nepal in my recent papers (1982; 1983); they are 8 (including 3 new) species of Epipsestis and 1 species of Nothoploca based upon the collection of the Japanese expedition to Nepal-Himalaya 1979 and 1981 from post-monsoon to late autumn. In the following list, I will enumerate 16 species under 9 genera, including one new genus and one new combination. The material used in this paper is composed of about a hundred specimens, which were mainly collected by the members of the Lepidopterological Research Expedition to Nepal-Himalaya in 1963 from June to August, organized by the Lepidopterological Society of Japan. The itinerary of this expedition was repeatedly presented in Special Bulletin of Lepidopterological Society of Japan, (2):iii-v (1966) and (4):ix-xi (1970). Almost all the specimens here recorded were taken by Mr. T. HARUTA and other members in Tamur Valley of Eastern Nepal; consequently I present only the collecting places in Tamur Valley and dates in 1963 in the enumeration of the specimens. Several specimens from other sources are shown with full data according to their labels. All the specimens from the Lepidopterological Research Expedition are now in Mr. T.HARUTA'S collection, but they will eventually be transferred to National Science Museum (Nat. Hist.), Tokyo.

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[in Japanese]

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The female of Chrysozephyrus disparatus interpositus HOWARTH is now described from Kathmandu, Nepal which is approximately 320 kilometres from the original locality 'Sikkim.'

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