Amphidromus adamsii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Camaenidae.SubspeciesAmphidromus adamsii adamsii (Reeve, 1848) Amphidromus adamsii articulatus Fulton, 1896. Amphidromus adamsii duplocinctus Fulton, 1896. Amphidromus adamsii inornatus Fulton, 1896 Amphidromus adamsii luteofasciatus Fulton, 1896. Amphidromus adamsii ornatus Fulton, 1896. Amphidromus adamsii rubiginosus Fulton, 1896 The shell is imperforate or nearly so, oblong-conic, and rather solid, exhibiting striatulations but hardly any spiral striations. Its color is dead-leaf brown, streaked with darker shades, fading to whitish on the upper part of the last whorl and on the spire. It sometimes features irregularly bent brown stripe markings on the spire and some spots at the periphery, with the suture appearing plain or with a reddish-brown line near it below. The apex is white, sometimes bearing a dark dot. The lip and columella are white, the latter being surrounded by an obscure or blackish area. Comprising six and a half whorls.Amphidromus adamsii rufocinctus Fulton, 1896 Amphidromus adamsii simplex Fulton, 1896. Amphidromus adamsii subunicolor Fulton, 1896. Amphidromus adamsii superbus Fulton, 1896.