27 





b 



mm. On the aboral surface of each tentacle there are two rows of small flat 

 rod-like spicules. 



The Stiitzbundel is well developed and consists of a number of spicules of 

 about 1*2 mm. in leny;th. 



One of these projects 

 beyond the polyp-head, 

 and the tip of a second 

 is also visible. In others 

 the Stiitzbundel is more 

 strongly developed and 

 consists of a number of 

 spicules, larger in size, 

 one of which may reach 

 a length of 2 "4 mm. and 

 project about 0'6 mm. 

 beyond the polyp. 



Cortical spicules : 

 {(i) In the stem the 

 spicules are spindles with 

 numerous regularly arranged rough warts. 

 0"8 mm. in size, the larger about 32 mm. 



(f)) In the stalk there are short thick spindles, three-rayed forms and 

 numerous irregularly bi'anched spindles and stars, all thickly covered with 

 numerous very rough warts. The spindles average about 0'6 mm. in length. 



Canal-wall spicules : (a) In the stem there are spindles of about the same 

 size as the spindles of the stem cortex but furnished with much simpler warts. 



(/>) In the stalk the spicules are similar to those of the cortex of the stalk 

 but slightly larger and thicker. 



Colour — The stalk, stem and branches white with a tinge of red ; the 

 smaller branches, twigs and polyp-stalks yellowish-red ; the polyps yellowish- 

 white. 



Locality : Table Island (Cocos) 



Fig. 14. D. cocosiensis. — b, Spicules of stalk cortex ; c, Spicules 

 of stalk canal walls. 



The smaller spindles average about 



Dendronephthya purpurea, Henderson. 



The specimen measures 6 cm. in height and about 47 cm. in maximum 

 breadth. 



The stalk or trunk is short and flabby, greatly wrinkled and contracted. It 

 is granular in appearance and gives off from its base a number of stolons. 



The polyparium is very irregular in shape, flattened on one side and rounded 

 on the other ; it is fairly compact in the lower portion, but very open and 



