LACUNA DIYARICATA. 75 



NOTE ir. 



SOME SPECIES OF MOLLUSCS, NEW FOR HOLLAND 

 OR RARELY FOUND THERE. 



BY 



Dr. J. H. VERNHOUT. 



Some time ago Mr. W. C. van Heiirn, 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 be- 

 longing 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. 



2. Bissoa membra?iacea Ad. Many specimens, collected 

 June 1909 on the coast of Texel. While intending to give 

 in this periodical a list of the shell-bearing molluscs from 

 Holland, represented in the Leyden Museum, I shall delay 

 till then the description of the specimens of this very 

 variable species. 



3. Actaeon tornatilis L. One specimen, collected at Scheve- 

 ningen in 1905, and two specimens, collected at the same 

 locality May 1910. There is in the Leyden Museum still 

 another specimen in very bad condition, collected near 

 Loosduinen, a village south of Scheveningen, by Mr. van 

 Breemen in 1898. 



Lately Mr. P. P. de Koning, one of the Preparators of 

 our Museum, presented some bivalve shells, collected by 



Notes from the Leyden IMuseum, Vol. ZSXXV. 



