— 286 — 



CooKE. The Geographical Distribution of Purpura lapillus L. 

 — H. O. N. Shaw. Descriptions of Colour Varieties of Conns 

 quercinus Hwass [var. albus n. var., Aden] and Cypraoa La- 

 marcki Gray [var. phylUdis n. var., Aden]. — A. S. Kennard 

 and B. B. Woodward. On the Non-marine Mollusca of a Post- 

 Pliocène Deposil at Apethorpe, Northamptonsliire. — G. B. 

 SowERBY. Descriptions of five new species of Mollusca of the 

 gênera Drillia [D. prœclara n. sp.], Marginella [M. (artwrighti 

 n. sp.], Apicalia [Mucronalia exquisita n. sp.], Plcsiotrochus 

 [P. ccylonicus n. sp.] and Ringicula [R. truncata n. sp.], ail 

 from Ceylon; also Noies on the genus Plcsiotrochus (Figs.). — 

 R. BuLLEN Newton. On some Molluscan Remains from the 

 Opal Deposits (Upper Cretaceons) of New South Wales [Cyre- 

 nopsis ausiralicnsis^ C. (?) elongala, Uriio Jaqueti, U. white- 

 cUilsensis, nn. spp.] (PI. VI, Map and Figs.). — H. C. Fulïon. 

 Molluscan Notes [Hclicina Milleri n. nom. = irochiformis 

 Miller, non Sow.]. — H. C. Fulton. Description of a supposed 

 new species of Placostylus [P. (CaUistoch(iris) subroseus 

 n. sp., Viti Islands] (Fig.). 



Vol. XI, Part V, June 1915. 



Contents : R. Bullen Newton. Obituary Notice : A. .7. Jukes- 

 Browne. — A. 11. Cooke. Presidential Address : The genus 

 Cinusilia : a study of ils geographical distribution, with a few 

 notes on the habits and gênerai economy of certain species 

 and groups. — A. S. Kennard and B. B. V.'nonwARO. On Heli- 

 cella (Candidula) crayfordrnsis n. sp., from the Pleistocene 

 Deposits of South-r<:aslern England (Figs.). — E. W. Bowell. 

 On the Mounting of Radulœ for Microscopic Examination 

 (pTTVII). — E. W. BowELL, Note on Ilygvouria liispida var. 

 unua Jeff. (Fig.). — C. Davies Sherborn and Alexandeh Rky- 

 NELL. Notes on Swainson's (( Exotic Conchology ». — E. A. 

 Smeth. On Uanrlla Icucostoma Lamarck [Cliaronia poecilos- 

 tonui n. sp., Cape Colony]. — G. C. Crtck. Noie on Nauliius 

 viokatlamensis A. H. Foord, from the Eocene of Egypt 

 [PI. VIII and Mgs.]. — ToM Iredale. Somc more Misused 



