日本産陸産貝類の解剖的研究(5) : パンダナマイマイとタメトモマイマイ
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概要
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Helix circulus Pfeiffer 1846, formerly well known as Helix connivens Pfeiffer 1850, distinctly differs from Helix connivens phaeogramma Ancey 1883 in the genital features as is shown in the following table, while the shell of the former is slightly distinguished from that of the latter is having the more depressed spire and the obtusely angulate periphery. Characters H. circulus H. c. phaeogramma Accessory sac absent present Mucous glands two seven or eight Vagina short rather long In the absence of accessory sac and the shortness of vagina, Helix circulus may be strictly included in the typical group of Bradybaena, together with B. similaris (Ferrusac), the type species of this genus, and B. pellucida Kuroda et Habe. On the other hand, H. c. phaeogramma stands near B. (Phaeophelix) submandarina (Pilsbry), the type species of this subgenus, in having the large accessory sac and the rather long vagina. Therefore, H. connivens phaegramma not only differs from H. circulus (=H. connivens) specifically but also subgenerically as Bradybaena (Phaeohelix) phaeogramma.
- 社団法人日本動物学会の論文
- 1956-05-15
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