PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 229 



ORDINARY MEETING. 

 Friday, 8th March, 1901. 

 E. A. Smith, F.Z.S., President, in the Chair. 

 The following communications were read : — 



1. "Note on the Anatomy of Ther sites (Eadra) bipartita (FerA" 

 By S. Pace, F.Z.S. 



2. " New Marine Shells from ' The Kowie' of South Africa." By 

 G. B. Sowerby, F.L.S. 



3. " New Marine Shells from the Philippines." By G. B. 

 Sowerby, F.L.S. 



4. "A new species of MarginellaP By G. B. Sowerby, F.L.S. 

 Exhibitions were placed on the table by the following : — 



Mr. E. A. Smith : specimens of Paludestrina Taylori, Smith, a new 

 species recently found at Dukenfield, Cheshire, where it occurs 

 abundantly in the canal ; also a variety of Bithynia tentaculata (Linn.) 

 from the Pevensey Marshes ; this variety, which is characterized by 

 raised longitudinal stripes, occurs in association with the ordinary 

 unicolorous form ; a similar variation was presented by the Limna?«3 

 from the same locality. 



Dr. Lyster Jameson : a large series of Pearl Oysters : he stated his 

 belief that three species existed, viz., Margaritifera margaritifera 

 (Linn.), M. vulgaris (Schum.), and If. earchariarum, Jameson. The 

 first of these could again be divided into a number of geographical 

 races or varieties. He also exhibited specimens of a Perna found 

 above ordinary high-water mark, only in reach of the spray or of high 

 spring tides. 



Mr. S. Pace : a very fine series of Pearl Oysters, selected specially 

 to show all the early stages of growth and the difficulty of dis- 

 tinguishing the different forms in the spat stages ; also a series of 

 specimens showing the great variations met with in the shells of 

 JJrillia sierra, Watson, and Phos sculptilis, A. Ad , both of which 

 were originally described from single dead specimens collected by the 

 "Challenger" expedition; also specimens and drawings in illustration 

 of his paper. 



Mr. M. F. Woodward, on behalf of Miss Donald : specimens of 

 Janthina pallida, Harv., from the Bay of Naples. The animals, which 

 were preserved in formol, showed the float, and some were still 

 attached to their prey, Veletta. 



Mr. G. B. Sowerby : a fine series of Phasianella australis, Gmel., 

 showing variation in form and colour ; also specimens in illustration 

 of his paper. 



