PLATE IV. 



Figs. I — 6. Lima (Acesta) celebensis Bartsch. 3 shells of différent âges from St. 259, St. 314 and St. 316 



respectively. Natural size. 

 Figs. 7, 8. Lima {Limatula) leptocarya Melvill. A shell from the Persian Gulf. Natural size. 

 Figs. 9, 10. Lima {Limatula) sibogai sp. nov. A shell from St. 208. Natural size. 

 Figs. II — 13. Pinna {Atrina) strangei Reeve. Two shells from St. 172 and St. 193. Natural size. 

 Figs. 14, 15. Pinna {Atrina) penna Reeve. A shell from St. 240. Natural size. 



