Zoology of the R.I.M. S. Investigator. 



Mollusca, Plate XVII. 



Zcu. 



1. Atys suDmalleat£u,E.A.Smith x 3. 2. Cylichna, andamamca,E.A. Smith x e. 3. Xylophaga, mdica, E.A.Smith x 3. 4. Vesicomya, indica.,E.ASiTiith. 



[^ fei Photogravure, Survey of India, Offices, Calcutta, June, 1906. 



35 



