Two Japanese black bears (Selenarctos thibetanus), an adult male and an adult female with a cub, were radio-tracked in Omote-Nikko, Tochigi Prefecture in summer 1978. The male spent three days in an area of about 26 ha around the trap site of Ide-sawa, and moved to the south slope of Mt. Tanze two kilometers in distance from the trap site. He spent there 10 days in an area of about 38ha. Then his radiocollar dropped out. On the other hand, the female spent three days in an area of about 20ha west of the trap site of Ohsawa, and then disappeared. However, she was sighted with new two cubs on the ton of Mt. Tanze in the next summer.

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イタチにおける体表にある分泌腺の研究の一環として, 皮脂腺と汗腺について分布と組職化学的特徴を調べた。チョウセンイタチとニホンイタチを用いたが, 皮脂腺の分布密度は部位にによって異なり, 頬, 前後趾端の背面, 肛門周囲に特に多く観察された。皮脂腺はGlucose-6-phosphate dehydrogenase活性の非常に強い腺 (I型) と弱い腺 (II型) に分類でき, さらに1型はAldolase活性の陽性な腺 (Ia型) と陰性 (Ib型) に細分類できた。Ia型は頬にのみ, Ib型は全身にわたって観察された。II型は陰茎先端部の皮膚にのみ観察された。I型と比較してII型ではステロイド脱水素酵素群の活性が高かった。汗腺はステロイド脱水素酵素群の活性に陰性なI型と弱陽性なII型に分類できた。I型はさらにNicotin amide adenine dinucleotide tetrazolium reductase (NADHTR) 活性が中等度で, Aldolase活性の強い腺 (Ia型) , NADHTR, Aldolase活性がともに強い腺 (Ib型) , NADHTR活性が強く, Aldolase活性の陰性な腺 (Ic型) の3種に分類できた。II型は陰茎先端部周囲の皮膚に, Ia型は全身に, Ib型は頬, Ic型は前後趾端の背面に観察された。なおチョウセンイタチとニホンイタチの間には皮膚腺の分布や組織化学的性質に相違はみられなかった。

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サツマイモとピーナツを栽培する畑で, 11月に, 3kgにおよぶピーナツがドブネズミによって貯蔵されていた。

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Faunal surveys of Mishima Island and two islets of Rokuto Islands (Oshima Island and Aishima Island) were undertaken during May 29-June 1, November 27--December 1, 1980.
1) Mishima Island lies in the Japan Sea about 46.3km off the northern coast of south-western Honshu and has an area of 7.86km². There were obtained Urotrichus talpoides, Crocidura dsinezumi and Mus molossinus (Table 1) . Urotrichus talpoides of Mishima Island had larger body sizes than that of Honshu (Table 2), and there were found partial albinisms of several grades to occur quite commonly in Urotrichus talpoides specimens captured (Fig. 4) . Except for these three species, it was surposed that the wild land mammal inhabiting on Mishima Island was Mustela sibirica only.
2) Oshima Island lies in the Japan Sea about 7.5 km off the northern coast of southwestern Honshu and has an area of 3.1km². There was obtained only one species, Apodemus speciosus. Tunnels of Mogera sp. were found commonly in the cultivated fields. It is said that Mustela sibirica is not found on this island.
3) Aishima Island lies in the Japan Sea about 14 km off the northern coast of southwestern Honshu and has an area of 2.6km². There were obtained Mus molossinus and Crocidura dsinezumi. Except for these two species, it was surposed that the wild land mammal inhabiting on Aishima Island was Mustela sibirica only.

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Killed pups of Micromys minutus were left in their breeding nest under natural habitat. Their estimated age was 5 or 6 days. When discovered, the bodies were still bleeding and did not show cadaveric rigidity yet. Bites were located on the nose, neck, side and inguinal resions in all of them. Two received a severe injury on the head. From the examination of bites, it was inferred that the infanticide was done in a brief time by their mother.

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It is well known that the geographical distribution of mammals is affected by vegetation. This report deals with the relationship between the width of the distribution of eight species of mammals, Macaca fuscata, Selenarctos thibetanus, Cervus nippon, Capricornis crispus, Sus scrofa, Vulpes vulpes, Meles meles and Nyctereutes procyonoides, in Kochi Prefecture and the kinds of vegetation existing in their habitats.
And in addition, we make a comparison among the above species to examine the vegetation selectivity.

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A study on the range use of sika deer was conducted in the Nemuroshibetsu district of eastern Hokkaido, Japan, from September, 1978 through November, 1979. The range varied according to the change in the amount of available plant food and the snow depth. During the snowless season the deer depended mainly on green forages, i. e., they fed on many species of forbs and grasses in the woods and on a river bank in summer, and on pasture herbages in fall. With the increase in snow depth in winter the feeding habits were changed to foraging the leaves of sasa bamboos (Sasa senanensis) or to browsing along with concentrating themselves in the wintering area of a river bank. The change in the food habits and the range use of the deer occurred parallel to the formation of“feeding groups”in the open pastures in fall and of“yard groups”in the wintering area in winter. It was assumed that the size and availability of the wintering area might be an important factor controlling the density of the deer in an area.

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北海道の4地域から採集したエゾヤチネズミの成獣174頭を用いて, 血漿エステラーゼの地理分布を調べた。その結果, 22本のエステラーゼバンドが検出され, そのうちのEs-3～Es-6のバンドは地域的な連続した傾向を示した。すなわち, これらのバンドの出現頻度は南部において高く, 北東部に向かって低くなった。

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