This is to record the donation of the two large specimens of bivalve and ammonite from Mr. Toshio Shimanuki to the Kitakyushu Museum of Natural History. One is the left valve of Inoceramus (Inoceramus) iburiensis Nagao et Matsumoto from the Obira area of northwestern Hokkaido (Pl. 1, Figs. 1–4). It shows the characters which confirm the recently given redefinition and diagnosis of the species (Matsumoto, 1981) and also supplement certain points. The other is Fagesia spheroidalis Pervinquière from the eastern coast of Cape Soya, northern Hokkaido (Pl. 2, Figs. 1, 2). It is similar to an example from the Oyubari area of central Hokkaido described by Matsumoto & Muramoto (1978), but represents a more advanced stage of growth. A minor difference in the size of umbilicus from the lectotype from Tunisia is regarded as a variation. Remarks are given on the palaeobiogeography of Fagesia (see Text-fig. 3).

As an appendix a note is described, with T. Miyauchi, on the biostratigraphy of the Cretaceous strata exposed on the eastern coast of Cape Soya (Text-fig. 4). The Fagesia bearing bed is distinctly below the prolific part of the Zone of Inoceramus hobetsensis and probably assigned to the upper part of the Lower Turonian.

Two specimens of ammonite jaws from the Late Cretaceous deposits in northwestern Hokkaido have been donated to the Museum by Mr. Hiroji Kokubu. As a result of the examination, they are upper jaws of Gaudryceras sp. embedded in Lower Santonian deposits of the Obira area. Restored height of the gaudryceratid body chamber might be 50 to 60 mm judging from the ratio of the jaw height or wing length to the height of body chamber.

The structure and musculature of male external genitalia and terminal external structure of female abdomen of Eligma narcissus (Cramer) are figured and described. The mode of firm connection between male and female external genitalia is effected in the following sequences: 1) the acute tips of valvae. which are characteristically curved outwards, are applied to the membranous ridges of female, which are present laterad to the ostium bursae, 2) the valvae are strongly expanded laterally by the contraction of M6 and male and female genitalia are firmly fixed, then 3) the phallus is inserted into the ostium.

Nine nominal species of Salix-inhabiting gall midges are recognized to be distributed in Japan. Among them, three species, Iteomyia capreae, Rabdophaga rosaeformis and R. clavifex are recorded, for the first time, from Japan. A Japanese endemic species, R. yanagi is newly combined with the genus Lygocecis, and a neotype of the species is designated. Two Japanese species, R. salicivora and Helicomyia chidai, and a European species, I. major, are synonymized with R. rigidae, L. yanagi and I. capreae, respectively. These species, except R. salicifoliae which has been insufficiently known, are redescribed together with notes on their host plants, galls, parasitoids, distribution and collecting data. Results of measurements and of setal counts are summarized in tables, and keys to species are also presented for galls, adults, mature larvae and pupae.

In the present report, a fossil elephant molar is recorded, which is donated by Mr. M. Negishi to the Kitakyushu Museum of Natural History. Its enamel patterns in occulusal surface, frequency of lamellae and other characters indicate that it belongs to the subgenus Mummuthus (Parelephas). The material is dredged from shallow sea bottom of the Hwang Hai (Yellow Sea).

An upper jaw with three molars of a squalodontid is discovered from the Lower Miocene Ashiya Group, North Kyushu, Southwest Japan. A new species, Metasqualodon symmetricus is proposed based on the specimen. The teeth bear accessory cusps on either side and strial ornamentations on the lingual surface of crown. Similar features are seen in the squalodontid as Metasqualodon harwoodii (Sanger), reported from the "Oligocene" of Australia (Sanger, 1881). The Japanese species are characterized in more symmetrical arrangement of the accessory cusps.