*Perna torta, ii, 38.
*Petricola centenaria, xxiii, 341.
*Pholadomya elongata, xxix, 153.f
*— occidentalis, xxiii, 292.f
Pholas, xxiii, 292.
— costata, xxiii, 346.
*— ovalis, ii, 39.
Physa ancillaria, xl, 268, 269.
— elongata, xl, 269.
— gyrina, xl, 268, 269.