Shell small, subquadrangular, white, with the anterior end shortest, and the surface sculptured with strong, close, subequal, rounded concentric waxes, separated by linear interspaces; base produced in the middle, rounded; anterior end short, rounded; posterior end longer, with a rounded point, but not rostrate; beaks apical, but not prominent; lunule and escutcheon Subequal, small, narrow, impressed, rather short, with no bounding elevated line or groove; ligament small, longer than high, directly under the beaks, external to the tooth line, and visible externally in the closed shell; anterior part of the hinge with eight, posterior part with ten, V-shaped teeth, of which two or three on each side are very small; scars well marked, impressed; pallial line obscure, arcuated in front of the posterior adductor; margin of the valves plain, interior polished, shell rather thick; maximum longitude of shell 5.0; maximum altitude, 4.2; diameter 3.5; distance of vertical, drawn from the beaks, from anterior end, 1.5mm.

This shell has much the outline of Leda quadrangularis Dall, but is proportionally higher and shorter, with more prominent and regular concentric sculpture.

Ninety miles north from Ceara, Brazil