20 



show an aggregation of the spines on the convex side, and in these eases, the 

 spines are usnally strongly developed. The spindles average about 1 mm. in 

 length. 



Canal-wall spicules : (a) In the stem the canal walls are thickly tilled 

 with small, flat, spindle-shaped to star-shaped spicules. 



{/j) In the canal walls of the stalk there are a very few spindles and star- 

 shaped forms and numerous very small disc-shaped bodies. 



Colour — The stalk is greyisli-white ; the stem and larger branches white to 

 semi-transparent with a yellowish-brown tinge ; the remaining branches and 

 twigs, light brown to deep brown ; the polyps white. 



Locality : Andamans. 



Dendronephthya ovata, Henderson. 



A small specimen al)Out 7 cm. in total height and about 3 cm. in greatest 

 breadth. 



/ 



/ 



Fig. 9. D. ovata. 



Fig. 10. D. ovata.— 

 Spicules of stalk cortex. 



The stalk or trunk is long (4 cm.), fairly thick and greatly shrunken. It is 

 leathery in texture, granular in appearance, and has the upper portion hidden by 

 reflexed flattened branches. 



The polyparium is egg shaped, slightly flattened on one side, that side 

 having less well-developed branches. Two of the lowest branches are flattened 

 leaf-like .structures and almost sui'round the stem, leaviuij; only two small free 



