208 CEYLON PEARL OYSTER RETORT. 



PLATE III. 



Fig. 36-38. Small dichotomising rods of Actinopyga serratidens, n. sp. 



Fig. 39-41. Bone-shaped spicules of same. 



Fig. 42-45. Showing transformation from a round " table " to a cross-shaped " table " in Holothuria 



I.iati, Ludwig. 

 Fig. 46. Holothuria gallensis, n. sp., dorsal surface; natural size. 

 Fig. 47. Side view of " table" of Holothuria gallensis, n. sp. 

 Fig. 48. " Knobbed button " of same. 



Fig. 49. Underneath view of " table " in older specimen of H. gallensis. 

 Fig. 50. View of " table " in younger specimen of H. gallensis. 



