PLATE VI. 



Figs. I, 2. Abra sibogai sp. nov. Holotype from St. 45. Natural size. 



Figs. 3, 4. Mactra [Mactrinulà] dolabrata Reeve. A spécimen from St. 273. Natural size. 



Figs. 5, 6. Macrocallista roseotincta (Smith). A spécimen from St. 27g. 



Figs. 7 — 10. Hysteroconcha Q Lanielliconcha) philippinariim (Hanley). Two shells from St. 213 and St. 279 



respectively. Natural size. 

 Figs. II, 12. Hysteroconcha i^. Lainelliconcha) daiitsenbergi sp. nov. Holotype from St. 240. X 2. 

 Figs. 13, 14. Circe nana Melvill. A shell from St. 285. X 3- 

 Figs. 15, 16. Gafrariuni catillus Hedley. A shell from St. 99. Natural size. 

 Figs. 17 — 20. Dosinia [Austrodosinia) conglobata Romer. Outer and inner views oî a shell from St. 71. 



Natural size. 

 Figs. 21, 22. Chione [Tiinocled] viindanensis Smith. A shell from St. 105. X 3- 



Figs. 23, 24. Chiotie [Timoclea) crassisquamata sp. nov. Holotype from the Anchorage off Noimini (St. 296). 

 Figs. 25, 26. Cardium [Ti'achycardium) sewelli sp. nov. Holotype from St. 133. Natural size. 

 Figs. 27, 28. Cardium [Trachycardium) beaîiforti sp. nov. Holotype from St. 313. Natural size. 

 Figs. 29 — 32. Cardium (? Ctenocardia) festivum Deshayes. Two shells from St. 37. Natural size. 

 Figs- 33> 34- Corcidum cardissa (Linn.). Side view of a valve and both valves united from St. 193. Natural size. 

 F'gs- 35' 36- Corcidum cardissa (Linn.) var. monstrosum (Gmelin). Side view of a valve and both valves 



united from St. 3 1 3. Natural size. 



