Original Combination:

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Original Description:

T. rimato-perforata, supernc depressa, costulato-striata, siibtus inflato-convexa, laeviuscula ; alba vel fnsco-cornea, tenui, spira brevissima ; anfr. 5^-6, planiusculis, ultimo ad apertnrara deflexo, breviter disjuncto, constricto, vix scrobiculato ; apertura subhorizontali, auriformi, coarctata ; perist. acuto, continuo, marginibus plica linguiformi, brevi, intrante junctis ; dextro lamella obtusa, submarginali, basali tuberculo dentiformi, obliquo et sinuoso, instructo. Shell perforate, above depressed, with rib-like striae, beneath inflated, convex, almost smooth, and with microscopic spiral lines ; white, or brown horn-color, thin ; spire very short ; whorls 5 ½ to 6, rather flat, the last deflected, and shortly turned outwards from the preceding whorl, constricted, scarcely scrobiculate ; aperture sub-horizontal, ear -shaped, contracted ; peristome acute, continuous, the margins joined by a short linguiform fold, entering within the aperture ; the right margin with an obtuse submarginal lamella, and the base with an oblique sinuous, tooth-like fold. Diam. maj. 11 1/2; min. 10. Alt. 6 mill. " » 9, " 8, " 4i "