Some species of Molluscs, new for Holland of rarely found there

Some time ago Mr. W. C. van Heurn, student at the Leyden University, presented a very large collection of shells, all of them found by himself in various localities of our country, to the Leyden Museum. Among them I discovered specimens of three species, not recorded as belonging to the Dutch fauna. 1. Lacuna divaricata Fabr. A few specimens, collected June 1909 on the coast of Texel. Mr. M. M. Schepman, the well-known conchologist, wrote to me this being only the second time he saw Dutch specimens