八重山群島(琉球)産ヘビに関する若干の知見

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  • Some observation on snakes found in the Yaeyama Islands, Ryukyus
  • ヤエヤマ グントウ リュウキュウ サン ヘビ ニ カンスル ジャッカン ノ チケン

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The new observations on the two kinds of snakes, Dinodon septentrionalis multifasciatus and Calliophis macclellandii iwasakii are presented in this paper.<br>1. I concluded that the classification of Dinodon septentrionalis multifasciatus based on the number of supralabials adjacent to eyes is not correct.<br>In 1931, Dr. M. Maki named subspecies Dinodon septentrionalis multifasciatus. He described the subspecies has four supralabials adjacent to eyes. The type specimen, which he examined, was collected from Ishigaki Island. In my examination, the specimen collected from Iriomote Island has only three supralabials adjacent to eyes. It is just the same to Dinodon septentrionalis ruhstrati inhabiting in Formosa.<br>2. The size of Calliophis macclellandii iwasakii must be corrected to 756mm in total length, and 77mm in tail length. Although literature report the total length of the species is 365mm, and tail length is 35mm, my examination indicates the total length is 756mm, and tail length is 77mm.<br>3. Poisonous character of Calliophis macclellandii iwasakii is not on record. According to my examination using mice, the species produce strong neurotoxin.

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