“CARDITELLA, n. g.
Shell exteriorly like Cardita. Hinge composed of two cardinal teeth in the left valve and one in the other. Each valve also has two lateral teeth, one nearly marginal on the one side, the other on the opposite side being well within the outer edge, with a groove between it and the margin for the reception of the submarginal tooth of the other valve. External ligament small, yet distinct. Internal cartilage minute, placed immediately beneath the apex of the valves. Pallial line simple.
To this genus belong Cardita tegulata, Reeve, and C. semen, Reeve, the former from Valparaiso, the latter from Bolivia.”
(Smith, 1881: 42-43)
小心蛤屬（學名： Carditella）是小心蛤亞科 （Carditellinae）的屬[1]。本屬原屬心蛤科[1][2]，2012年與小心蛤亞科一起改屬Condylocardiidae科（英语：Condylocardiidae）[3][4][5]。
本屬物種外殼的型態與算盤蛤屬（Cardita）物種的型態相似。鉸齒在左殼有兩顆主齒，右殼只有一顆；側齒則兩邊均有兩顆。one nearly marginal on the one side, the other on the opposite side being well within the outer edge, with a groove between it and the margin for the reception of the submarginal tooth of the other valve. External ligament small, yet distinct. Internal cartilage minute, placed immediately beneath the apex of the valves. Pallial line simple.
根據WoRMS，本屬包括的物種如下：
|access-date=中的日期值 (帮助) 小心蛤屬（學名： Carditella）是小心蛤亞科 （Carditellinae）的屬。本屬原屬心蛤科，2012年與小心蛤亞科一起改屬Condylocardiidae科（英语：Condylocardiidae）。
