This note is devoted to the description of a new species of Mesophyllum recently discovered in a limestone of the Misaka Series exposed on the stream bed of Kayanuma-zawa at about 100m north of its function with the Nakatu-gawa. The locality lies at about 4km north of Matuda-mati, Asigarakami-gun, Sagami province (Kanagawa-ken), and the limestone is of Burdigalian stage, containing Nephrolepidina verbeeki (NEWTON and HOLLAND) and Miogypsina.

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In this article the writers reported the occurrence of Samarae of Pteroceltis from the Tertiary rocks of Hokkaidô and Tyôsen. One (fig. 1). is derived from the Kunnui Series of Abura, Prov. Siribesi, Hokkaidô; this is unfortunately very fragmentary, but the resemblance to the samarae of modern Pteroceltis Tartarinowii MAXIM.(fig. 3) is in no small degree great, though ours is decidedly larger in size compared with the living one. Another one (fig. 2, 2a) is derived from the Engethardtia bed of Kokangen, northeastern Tyosen; this is rather perfectly preserved and is very closely allied to the samarae of the living species. The writers wish to call these fossil types from Hokkaidô and Tyôsen under the name Pteroceltis? sp. and P. sp. cfr. P. Tartarinowii MAXIM, respectively.

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Some fossil samarae (text-figs. 2, 3, 4) belonging to the genus Ailanthus were discovered from the Kunnui series (Kawabataian; Miocene) of Abura, Prov. Siribesi. This is the first fossil occurrence of the genus in Japan, and palaeophytogeographically very interesting, because the genus does not exist in wild state in the Japanese Islands. Ailanthus now distributes rather widely in Asia and Australia, but its section Euailanthus of the subgen. Ailanthopsis, to which our fossil is belonged, grows only in China. Our fossil may be comparable to the living Ailanthus altibsima (MILL.) SWINGLE (fig, 1) of China and A. Confucii UNGER from the European Tertiary. The writers wish to suggest a new specific name, yezoense, for the present specimens.

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The Isikari Series in the Isikari coal-field contains a great number of molluscan fossils in brackish and marine habitats, while they were heretofore very scarcely investigated. The writers has been engaged in the study of these molluscan fossils under the guidance of Professor NAGAO, and some papers regarding this item are already in preparation. In this short note, the writer wishes to report the occurrence of a melanian fossil in the Isikari Series, as it has not yet been reported from the Series. The specimens now at hand are rather numerous, and most of them were collected by Messrs. S. TAKAO, S. KADOOKA, and T. SIMOGAWARA, during their geological survey in the district. The specimens occur in most cases in aggregation almost exclusive of other fossils, while in rare cases they are associated with Corbicula tokudai (YoK.), a common species in the Series. At this place, the writer wishes to express his indebtedness to Prof. T. NAGAO, Institute of Geology and Palaeontology, TOhoku Imperial University, Sendai, and Assistant Prof. S. Oism, of our Department, especially in their kindly criticism and reading of the manuscript. Writer's sincere thanks are also due to Mr. SUZUKI of the Division of Geology, Sigen Kagaku Kenkyfizyo in TOky6 for his hearty advice, and to Messrs. S. TAKAO, T. SJMOGAWARA, the geologists of the TankO Kisen Co. and S. KADOOKA, a geologist of the Mitui Kozan Co. for the loan of the specimens.

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[in Japanese]

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Little has been known of the fossil plants from the coal-bearing series of the Kusiro coal-field. This paper deals with the description of an occurrenee of new specjes of Woodwardia and Metaseguoia, W. Sasae and M. Kimurae, derived from the Harutori Bed of the Urahoro Series.
W. Sasae difiers from W. Endoana OISHI and HUZIOKA from the Woodwardia sandstoneof the Isikari coal-field in that the pinnules have obtuse or rounded apices and the lateral veins anastomose occasionally, while it differs from another allied species, W. Maxoni KNOWLTON, in that the pinnules have entire margin.
M. kimurae is named on some cones which are in a-coordance in the deeussate arrangement of the seminiferous scales to Metasequoia MIKI, but belonging to neither of the known species of this genus. This is the species very close to M. Onukii (Expo), M. japonica (ENDO), and M. disticha MIKI.

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