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''Gillia altilis'', common name the Buffalo pebblesnail, is a species of freshwater snail, an aquatic gastropod mollusk with an operculum in the family Lithoglyphidae.〔Thompson F. G. (1984). "North American freshwater snail genera of the hydrobiid subfamily Lithoglyphinae". ''Malacologia'' 25(1): (109 )-141.〕 ''Gillia altilis'' is the only species in the genus ''Gillia''.〔 == Shell description == The shell of this species is inflated but still conical. The shell color is usually yellow to green. The shell has 2–4 whorls when eroded, and ~4.5 when intact. Each whorl is distinctly shouldered. The umbilicus is either not apparent, or very small. The columella is not thickened, and the shell itself can be thin or thick. The shell aperture is oval to ear-shaped. When viewed laterally, the outer lip of the shell bends forward. The height of the shell is 6–8 mm (– in).〔 The operculum is chitinous, oval, yellow to green in color and shows paucispiral markings, with a subcentral nucleus. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gillia altilis」の詳細全文を読む スポンサード リンク
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