3 L a 



Reprinted from .4. Willey's Zoological Results. Part VI. (Cambridge University Press.) 



August, 1902. 





CONTRIBUTION TO THE NATURAL HISTORY OF THE 

 PEARLY NAUTILUS. 



By ARTHUR WILLEY, D.Sc. Lond., Hon. MA. Cantab. 

 Director of the Colombo Museum, Ceylon. 



I, PERSONAL NARRATIVE. 



With 18 Text-figures. 



II. SPECIAL CONTRIBUTION. 



With Plates LXXV.— LXXXIIL, a Map, and 15 Text-figures, 





