CONTENTS OF VOLUME X. 



PAGE. 



Malacological Notes. By E. R. Sykes, B.A., F.L.S. (Illustra- 

 tion.) .......... I 



Supposed new species of Helicina and Bulimuhts from Costa Rica. 



By H. B. Preston, F.Z.S. (Illustrations.) ... 4 



A Classified List of the Helicoid Land Sfiells of Asia. Part v. 



By G. K. GuDE, F.Z.S 5 



On some new species of Slugs collected by Mr. H. Fruhstorfer. 



By Walter E. Collinge, B.Sc. (Plate i.) . . . 16 



Notes on Slugs and Slug-like Molluscs. By Walter E. 



Collinge, B.Sc. ........ 17 



The Molluscan Fauna of Warwickshire. By H. Overton. . ig 



A Revision of the Colnmhellidae of the Persian Gulf and North 

 Arabian Sea, with Description of C. calliope, n. sp. By 

 James Cosmo Melvill, M.A., F.L.S. (Illustration.) . . 27 



The Anatomy of Certain species of Ceratisolen and Soleairhis. By 



H. H. Bloomer. (Plate ii.) ...... 31 



Classification of the British species of the genus Solen, Linne. By 



H. H. Bloomer 41 



On the Origin and Function of the Fourth Aperture in some Pele- 



cypoda. By H. H. Bloomer. ..... 43 



A Classified List of the Helicoid Land Shells of Asia. Part vi. By 



G. K. Gude, F.Z.S. (Plate iii.) 45 



On a new Genus and Species of the Family Phenacohelicidae. 



By Henry Suter. (Plate iv.) ..... 62 



Descriptions of new Land Shells from the Austro-Malayan 



Region. By E. R. Sykes, B.A., F.L.S. ... 64 



